MATTER
1. Which is a vector quantity ?
a. Speed b. Time c. Distance d. Velocity
2. What is a large group of stars together known as :
a. Planets b. Solar system c. Universe d. Galaxy
3. In which zone of the earth does air exist
a. Stratosphere b. Intermediate zone
c. Troposphere d. None of these
4. What is the middle layer of earth called
a. Core b. Mantle
c. Crust d. None of these
5. Cassiopeia constellation consists of stars :
a. 9 b. 4 c. 7 d. None of these
6. The dimensioned formula is -
a. MLT-2 b. MLT-1 c. ML-1T d. M-1LT
7. A substance which can be drawn into a wire is called
a. Ductile b. Flexible c. Malleable d. Pliable
8. When does a solar eclipse occur :
a. Earth comes between sun and moon
b. Moon comes between sun and earth
c. Sun comes between moon and earth
d. At times of crisis
9. Day-Night happens because ?
a. Because of rains b. Earth rotates on its axis c. Moon revolves around Earth d. None of these
10. ……………. Absorb the Harmful UV radiation from the sun and prevents it’s from reaching the earth ?
a. Insolation b. Ozone layer
c. Atmosphere d. None of these
11.In which of the following is scalar ?
a. Speed b. Force c. Acceleration d. None of these
12. How many states are there in matter
a. 5 b. 2 c. 4 d. 3
13. A position is a particle with ?
a. Same mass as that of a proton but
with a negative
b. Same mass as that of proton and with
a positive
c. Same mass as that of an electron
with a positive charge
d. None of these
14. Hooke’s law states that ?
a. Stress is inversely proportional to the
strain
b. Stress and strain are independent of
each other
c. Stress is proportional to Young’s
modulus
d. Stress is directly proportional to the
strain
15. The dimenstional formula of pressure is
a. ML2T-2 b. ML-1T-2 c. MoLT2 d. MoLT-1
16. Air pressure at sea level is :
a. 760 cm of Hg b. 780 mm of Hg c. 76 cm of Hg d. 7.6 cm of Hg
Which of the following is scalar
a. Velocity b. Speed
c. Force d. None of these
What is the normal atmospheric pressure ( )
a. 720 mm of Hg b. 740 mm of Hg
c. 760 mm of Hg d. 780 mm of Hg
The weight of an object would be minimum when it is placed
a. At the north pole
b. At the south pole
c. At the equator
d. None of these
Where is atmospheric pressure maximum
a. At high altitude b. At sea level
c. At hilly area d. None of these
On which factor buoyancy depends for a given body ( )
a. Weight b. Density
c. Volume d. None of these
In which zone of the earth does air exist
a. Stratosphere
b. Intermediate zone
c. Troposphere
d. None of these
Mass of the earth
a)6.67 X 1011 Kgs b) 6 X 10 24 Kg c) 6.4 X 10 6 Kg d) 6 X 10 42 Kg
The moon is a natural satellite of the a. sun b. earth
c. Venus d. none of these
Ozone layer is badly effected by a. CFC b.No2
c. Cl2 d. All of these
Which is a victor quantity in the following
a. time b. momentum c. volume d. density
Which of the following is scalar quantity
a. electrical potential
b. displacement c. magnetic intensity
d. force
Which of the following is a scalar quantity
a. velocity b. acceleration c. force d. distance
MOTION, FORCE AND GRAVITATION
1. Which of the following utilize Newton’s Law of motion?
a. Archery b. Space Rocket c. Internal Combustion Engine
d. Kite flying
2. If a sprinter covers 200 metres in 20 seconds, what will be its velocity :
a. 10 m/s b. 4000 m/s c. 1/10 m/s d. None of these
3. A body at rest may have which of the following :
a. Speed b. Energy
c. Momentum d. Velocity
4. On which factor buoyancy depends for a given body
a. Weight b. Density
c. Volume d. Speed
5. What is called “change in position in a particular direction of an object” :
a. Velocity b. Accelaration
c. Displacement d. None of these
6. The value of gravity (g) is maximum at which place on earth ?
a. Poles b. Equator c. Poles and Equator d. None of these
7. The change of position in a particular direction is called ?
a. Velocity b. Acceleration
c. Displacement d. Distance
8. What is the formula to calculate Centripetal Force :
a. F = b. F = c. F = d. F = MV2
9. A body starts moving from a state of rest with an acceleration of 0.5 m/s2. After covering a distance of 250 m, the velocity of the body will be?
a. 12.5m/s b. 15.8 m/s
c. 18.7 m/s d. None of these
10. What is the dimension of surfaced Tension :
a. MLT-2 b. MLoT-2 c. MLT2T-2 d. MLT-1
11. A tennis ball of mass 0.25 kg strikes a racket with a velocity of 20 m/s. the player hits the ball resulting in the ball moving in the opposite direction with the same velocity. If the ball stays in contact with the racket for 0.1s then the force acting on the ball will be:
a. 200 N b. 100 N
c. 400 N d. None of these
12. When the speed of a moving object is doubled, its :
a. Kinetic energy increases 4 times
b. Acceleration is doubled
c. Weight is doubled
d. None of these
13. A ball weighing 10g hits a hard surface vertically with a speed of 5m/sec and rebounds with the same speed. The ball remains in contact with the surface for 1/100 sec,. What is the average force exerted by the surface on the ball :
a. 100 Newton b. 10 Newto
c. 0.1 Newton d. None of these
14. A car moving on a horizontal road may be thrown off the road during a turn :
a. Due to the lack of centripetal force
b. Due to the rolling frictional force
between the tyre and road
c. Due to the reaction of the ground
d. None of the above
15. The inability of a body to change its state of rest by itself is called :
a. Inertia of motion b. Conductor
c. Inertia of rest d. Inertia of direction
16. The gravitional force between the Sun and a planet A is ‘F’. What will be the gravitional force action between the Sun and another planet B if the mass of B is double the mass of A and the distance from Sun of B is double as compared to A ?
a. F b. 4F c. 2F d. F/2
17. A train is running 36 km/hrs. it crosses a pole is 25 sec. The length of train is :
a. 350 mtr b. 200 mtr c. 250 mtr d. None of these
A body starts to move from rest. If its acceleration is 10 m/sec2 then how much distance will it cover in 10 secs.
a. 5 m b. 90 m
c. 190 m d. None of these
The equation of relation between force, mass and acceleration is
a. m = aF b. a = mF
c. ma =1/F d. ma = F
All bodies large or small fall with same
a. Velocity b. Acceleration
c. Momentum d. None of these
A trolley is moving down an inclined plane with an acceleration of 2ms-2. What will be the velocity 3 sec after its starts moving
a. 6 m/s b. 5 m/sec
c. 2/3 m/s d. 3/2 m/s
A racing car is moving with an uniform acceleration of 4 ms-2, How much distance will it cover 10 sec after it starts moving from rest
a. 200 m b. 300 m
c. 100 m d. 2000 m
When a body is thrown upward from the surface of the earth, then at the highest point ( )
a. Velocity is Maximum
b. Acceleration is zero
c. Acceleration is Maximum
d. Velocity is zero
A car in moving with a speed of 35 km/h. How much distance will it cover in 12 minutes
a. 14 km b. 35 km
c. 7 km d. 28 km
The value of acceleration due to gravity “g” is nearly
a) 980 cms-2 b) 98 cms-1 c) 9.8 cms-1 d) 9.8 cms-2
The acceleration due to gravity on the moon
a) 1.82m/sec2 b) 1.92m/sec2 c) 1.67m/sec2 d) 1.76 m/sec2
The study of motion of a body under the action of force is called
a) Kinetierr b) dynomics c) Inertia d) Gravity
Every harmonic motion is a
a) Linear motion
b) circular motion
c) rotatory motion
d) periodic motion
Which of the following is correct about unit of the acceleration
a. m/sec2 b. cm/sec2
c. both are correct d. none
All bodies large or small fall with same
a. velocity b. acceleration c. force d. momentum
WORK AND ENERGY
1. A stationary body can have?
a. Velocity b. Momentum
c. Acceleration d. Energy
2. A moving body may not have which of the following :
a. Velocity b. Momentum
c. Kinetic Energy d. Potential energy
3. What is the formula to find Kinetic energy :
a. Mgh b. ½ (mv)2
c. ½ mV2 d.
4. The capacity to do work is called ?
a. Power b. Strength
c. Energy d. Watt
5. The energy possessed by an object due to its motion :
a. Potential Energy b. Electro Energy
c. Wind Energy d. Kinetic Energy
6. When the spring of a watch is wound it will possess which type of energy ?
a. Chemical energy
b. Magnetic energy
c. Potential energy
d. Kinetic energy
7. The rate of doing work is known as ?
a. Work b. Power c. Velocity d. Energy
A body of mass 2 kg is lifted upward to a height of 4 meters. Calculate its potential energy (g=10 m/sec2)
a. 40 Joule b. 20 Joule
c. 80 Joule d. 6 Joule
For a freely falling body
a. Both Kinetic and Potential
energies increases
b. Total mechanical energy
increases
c. Kinetic energy increases and
Potential energy decreases
d. Kinetic energy decreases and
Potential energy increases
If the velocity of a body is increased twice then its Kinetic Energy increases by how many times
a. 2 b. 4
c. 8 d. None of these
Mass energy relation was given by
a. Edison b. Einstein c. Bohr d. Newton
LIGHT AND HEAT
1. Name the defect of eye in which a person cannot simultaneously focus on both horizontal and vertical lines?
a. Astigmatism b. Myopia c. Hypermetropia d. None of these
2. Which of the following colour has longest wavelength in the visible spectrum :
a. Yellow b. Red
c. Green d. None of these
3. What is the relation between Centigrade and Fahrenheit temperature :
a. = b. =
c. = d. None of these
4. Image formed by a concave mirror is ?
a. Virtual b. Real
c. Erect d. None of these
5. The boiling point of water is :
a. 80o C b. 99o C c. 100o C d. None of these
6. Which type of mirror is used in motor cars for rear view ?
a. Convex mirror b. Lens
c. Concave mirror d. None of these
7. What would be the number of images formed for an object placed between two parallel plane mirrors ?
a. 8 b. 2 c. 1 d. Infinite
8. Which of the following colours has longest wavelength :
a. Yellow b. Red
c. Blue d. Green
9. The density of water is maximum -
a. 0 Celcius b. 4 Celcius c. 25 Celcius d. 50 Celcius
10. If a gas suddenly compressed, what will be the effect on its temperature ?
a. Increases b. Decreases c. Remains unchanged d. None of these
11. Which one of the following is not a primary colour -
a. Red b. Green c. Yellow d. all are primary colours
12. At which temperature the Centigrade and Fahrenheit’s scale are equal ?:
a. - 40o b. + 45o c. + 20o d. None of these
13. Convex mirror is used in :
a. Doctor’s Headlamp
b. Search lights
c. Car’s head light
d. Near the driver’s seat
14. Which of the following is used as a magnifying glass ?
a. Concave lens b. Convex lens c. Cylindrical lens d. None of these
15.The image formed by a convex mirror is always :
a. Real and inverted
b. Virtual and erect
c. Real and erect
d. Virtual and inverted
16. Tyndall effect is associated with which property of light?
a. Scattering of light b. Dispersion c. Suspension d. None of these
17. Cylindrical lens are used to correct :
a. Myopia b. Astigmatism c. Hypermetropia d. Colour blindness
18. What is the speed of light :
a.3,00,000 km per sec
b. 331 metre per sec
c.186000 metre per sec
d. None of these
19. Which of the following is used as a magnifying glass ?
a. Concave lens b. Convex lens
c. Cylindrical lens d. None of these
20. Which colour surface will absorb maximum light :
a. Black b. Yellow c. White d. None of these
21. Light is a form of :
a. Energy b. Colour c. Source d. None of these
22. Change 98.4o Fahrenheit into Celsius scale :
a. 35o C b. 34.6o C c. 36.9o C d. None of these
23. Which Lens is used to correct shortsightedness:
a. Plano-concave lens
b. Convex lens
c. Concave lens
d. Convexo-concave lens
24. What is the main reason for occurrence of MIRAGE -
a. Dispersion of light
b. Total internal reflection of light c. Refraction of light
d. Scattering of light
25. Boiling point of water is 100 Degree C. What is its corresponding reading in Kelvin Scale ?
a. 373 b. 273 c. 100 d. 250
26. Which of the following is good conductor of both heat and electricity -
a. Mercury b. Silver
c. Gold d. Brass
27. A student is standing in front of a plane mirror. When the mirror moves towards him at a speed of 10 cm/s then the image moves :
a. Away from him at speed of 20 cm/s
b. Away from him at speed of 10 cm/s
c. Towards him at speed of 20 cm/s
d. None of the above
28. The sky appears blue because :
a. Scattering of water droplets
b. Scattering of air
c. Scattering of dust particles
d. None of these
29. Above natural temperature, thermo e.m.f. ::
a. Changes sign b. Decreases with the rise in
temperature
c. Increase with the rise in temperature
d. Remains constant
30. Red light differs from blue light in its -
a. Frequency b. Intensity c. Amplitude d. None of these
31. A body has mass of 10g and Kinetic energy 200 Joules. The momentum of the body is :
a. 4 Kg m/s b. Kg m/s c. 0 d. None of these
32. Chromatic aberration in a lens is caused by -
a. Reflection b. Dispersion c. Interference d. None of these
33. The density of water is maximum at -
a. 4o Celcius b. 0o Celcius c. 50o Celcius d. None of these
34. Transmission of heat in metal is done by :
a. Conduction b. Radiation c. Convection d. None of these
35. The image formed by a spherical mirror is virtual. The mirror is -
a. Convex b. Convex or concave c. Concave d. None of these
36. With a rise temperature, the surface tension of a liquid -
a. Decrease b. Does not change c. Changes erratically d. None of these
37. Which lens is used in simple microscope -
a. Convex lens b. Concave lens c. Plain lens d. Special lens
34. Transmission of heat in metal is done by :
a. Conduction b. Radiation c. Convection d. None of these
35. The image formed by a spherical mirror is virtual. The mirror is -
a. Convex b. Convex or concave c. Concave d. None of these
What should be the position of an object in order to obtain a real, inverted image of the same size as the object by using a convex lens ( )
a. Between the lens and the focus
b. At the focus
c. At the center of curvature
d. At infinity
The power of a lens is +5D. The lens is
a. A convex lens of focal length .05 m
b. A convex lens of focal length 20 m
c. A convex lens of focal length .50 m
d. None of these
Which of the following lenses is used when a person feels difficulty in seeing a distant object
a. Convex lens b. Concave lens
c. Both convex and concave
d. None
The light with longest wave length
in the visible spectrum is
a. Yellow b. Red
c. Violet d. None of these
In a motor car, which mirror is used for rear view
a. Plane mirror b. Convex mirror
c. Concave mirror d. None of these
What is the type of image formed on the retina of the eye
a. Upright and Real
b. Upright and Virtual
c. Real and Inverted
d. None of these
A person standing in front of a mirror finds his image smaller then himself and erect. The mirror is of which kind
a. Concave b. Convex
c. Plane d. None of these
The focal length of a concave mirror is 10 cm. Its radius of curvature will be how much ( )
a. 6 cm b. 5 cm
c. 20 cm d. None of these
The image formed by a convex mirror is always
a. Real and inverted
b. Virtual and erect
c. Real and erect
d. None of these
The focal length of concave mirror is 10 cm. its radius of curvature will be
a. 6 cm b. 20 cm
c. 10 cm d. None of these
Which colour of the light has the maximum wavelength
a. Violet b. Red
c. Green d. None of these
When a white light passes through a prism, the colour which has the least deviation is
a. Red b. Violet
c. Green d. None of these
A curved mirror has a radius of curvature 28 cm. The focal length of this is
a. 28 cm b. 40 cm
c. 14 cm d. None of these
Tyndall effect is associated with which properly of light
a. Scattering of light b. Dispersion
c. Suspension d. None of these
The power of a lens is -2D. What will be its focal length
a. -0.05 b. -0.5
c. -5.0 d. -50.0
Write down the lens formula
a. - = b. + =
c. = + d. None of these
According to Ohm’s Law
a. R = VI b. R =
c. R = d. V =
Splitting of sun light into seven colours is known as
a. diffraction b. desperation c. deviation d. deflection
Speed of light in vacuum in
a. 5X103m/s b. 3X105m/s
c. 3X108m/s d. 3X10-8m/s
Colour of light are due to difference in
a. size of corpuscles
b. wave length
c. velocity
d. frequency
ELECTRICITY AND MAGNETISM
1. Which form of Iron ore found in nature has natural magnetic properties?
a. Haematite b. Magnetite c. Bauxite d. None of these
2. What is the nature of Electric circuits for domestic use :
a. Series b. Parallel c. Combination d. None of these
3. Purest form of Iron is :
a. Cast Iron b. Wrought Iron
c. Steel d. None of these
4. What is the magnetism at the centre of a bar magnet ?
a. Maximum b. Zero
c. Minimum d. Unknown
5. Which of the following substance is magnet :
a. Mercury b. Iron c. Gold d. Silver
6. Which type of magnet is used in electric bell ?
a. Horse shoe magnet
b. Bar magnet
c. Electrical magnet
d. Temporary magnet
7. Elecric bulb is connected to a 220V generator. The current is 0.50A What is the power of the bulb ?
a. 100W b. 110W c. 120W d. None of these
8. Which of the following is best conductor of electricity:
a. Copper b. Silver c. Iron d. Steel
9. Which non metal conducts electricity ?
a. Silicon b. Sulphur c. Graphite d. None of these
10. Law of electrical resistance was introduced by ?
a. Ohm b. Darwin c. Newton d. Joule
11. A condenser is used ?
a. To collect charge
b. To produce electricity
c. To produce charge
d. None of these
12. To which wire is the fuse connected in a three pin plug ?
a. Earth wire
b. Both live and neutral wires c. Live wire
d. None of the above
13. North pole of magnet ……………………. The North pole of the other magnet.
a. Repels b. Attracts c. Balances d. None of these
14. Current in conductor depends upon ?
a. Resistance b. Potential difference c. Electric charge
d. Potential difference and resistance
15. If ‘n’ equal resistances are first connected in Series and then connected in Parallel, the ratio of the maximum to the minimum resistance is :
a. n b. n2 c. 1/n d. None of these
16. The electric generator functions according to ?
a. Fleming’s Right Hand rule
b. Fleming’s Left Hand rule c. Fleming’s Both Hand rule d. Alternating current rule
17. Two 60 watt electric bulbs are used in a house for 8 hours daily. Calculate electricity consumed in 30 days ?
a. 14.4 K Watt Hr b. 28.8 Watt Hr c. 28.8 Watt
d. Cannot be calculated
18. The absence of a magnetic monopole is explained by ?
a. Fleming’s law
b. Gauss’s law
c. Coulomb’s law d. Lorentz law
19. Specific resistance of a wire depends upon.
a. Its length b. Its dimensions c. Its material d. Its cross-sectional area
20. Electric power is transmitted over long distance through conduction wire at high voltage because ?
a. Generator produce electric energy at very high voltages
b. High voltage travels faster c. This entails less power losses d. It reduces the possibility of theft of the wire
21. Three resistances of 2Ω, 4Ω and 8Ω are connected in parallel. Their equivalent resistance is.
a. 14Ω b. 10Ω c.Ω d. Between 2Ω and 8Ω
Permanent magnets are made of
a. Copper b. Soft Iron
c. Silver d. Steel
How is magnetic flux expressed
a. Dynes b. Joule
c. Gauss d. None of these
Magnetism at the center of a bar magnet is
a. Maximum b. Minimum
c. Zero d. None of these
The angle between the magnetic axis and geographical axis of the earth is
a. 18o b. 36o
c. 90o d. 15o
Magnetic substance a. Brass b. Wood c. Nickel d. Paper
Non-magnetic substance a. Iron b. Cobalt c. Nickel d. Brass
Which one of the following is not a diamagnetic substance
a. air b. water c. Iron d. bismuth
Example of diamagnetic substance
a. Fe b. Ni c. Wood d. Coppe
Example of ferromagnetic substance
a. water b. paper c. aluminium d. Steel
Oxygen is a …….. magnetic substance
a. dio b. para c. ferro d. none
SOUND AND WAVE MOTION
1. Which equation is related to Ohm’s Law?
a. PV=TR b. VxT c. P=MV d. VxPR
2. In which medium sound waves cannot travel :
a. Air b. Water c. Vacuum d. None of these
3. In which medium sound travels at minimum speed :
a. Water b. Air
c. Mercury d. Iron
4. Which of the following is associated with Doppler effect ?
a. Sound b. Light
c. Magnetism d. None of these
5. Which waves are used in SONAR :
a. X-rays b. Ultrasonic Waves c. Mechanical Waves d. None of these
6. Air pressure at sea level is ?
a. 76 cm of Hg b. 780 mm of Hg c. 7.6 cm of Hg d. 760 cm of Hg
7. Which of the following is not an electromagnetic wave ?
a. Gamma ray b. Light ray c. X-ray d. Cathode ray
8. Sound travels fastest in :
a. Air b. Steel c. Vaccum d. Water
9. Propagation of sound wave is possible only if there is …………….
a. Vacuum b. A medium c. Condensation d. Rarefaction
10. Which of the following radiations has the least wavelength ?
a. α – rays b. X - rays c. - rays d. Gamma rasy
11.On which scale loudness of sound is measured ?
a. Hertz b. Mega c. Decible d. None of these
12. What is the speed of sound in air :
a. 325 m/sec b. 332 m/s c. 232 m/s d. 340 m/s
13. When a wave travels from one medium to another, the quantity which will not change is :
a. Amplitude b. Frequency c. Speed d. Wavelength
14. A source has a frequency of 10 Hz. The time period will be ?
a. 103 S b. 102 S c. 10-3 S d. 10 S
15. X-rays travel with the velocity of ?
a. Sound waves b. Ultrasonic waves c. Supersonic waves d. None of these
16. The observer is moving away from a stationary source of sound emitting waves of constant frequency the apparent frequency will be :
a. First decrease and then increase
b. Decrease c. Increase d. None of these
If the speed of a wave in 100 m/sec and its wavelength is 100 cm, calculate the frequency of the wave
a. 100 Hz b. 10000 Hz
c. 10 KHz d. 10 Hz
A man hears the sound of thundering 4 seconds after the lightning. What is the distance between the man and the lightning ( Speed of light in air 330 m/s)
a. 8.25 km b. 1320 m
c. 13.20 km d. 13200 m
What are Sound waves
a. Longitudinal b. Transverse
c. Both d. None of these
Sound travels faster in which of the following
a. Water b. Air
c. Steel d. None of these
SUN AND SOURCES OF ENERGY
1. Nuclear fusion occurs in ?
a. Atomic bomb b. Hydrogen bomb c. Neutron bomb d. Nuclear Reactor
2. The main source of heat is :
a. Chemical reaction
b. The interior of the earth
c. The sun d. The star
3. Gobar gas contains which gas :
a. Propane b. Methane
c. Ethane d. None of these
4. Uncontrolled nuclear chain reaction is the basis of :
a. Nuclear reactor b. Atom bomb c. Hydrogen bomb d. None of these
UNITS AND MEASUREMENTS
1. Number of Joules(J) in one Kilowatt - hours?
a. 600,000 joules b. 6,600,000 joules c. 10,000 joules d. None of these
2. What is the unit of force in MKS system :
a. Dyne b. Newton c. Ergs d. Joule
3. What is measured by Seismograph :
a. Speed of Wind b. Rain
c. Earthquake d. None of these
4. The unit of Power is -
a. Jule per second b. Jule
c. Jule per second and watt
d. None of the these
5. Unit of consumption of electricity is :
a. Mega Watt-hour b. Kilo Watt-hour c. Mili Watt-hour d. Gram Watt-hour
6. What is the unit of resistance ?
a. Ohm b. Volt c. Amphere d. None of these
7. Which instrument is used to see heavenly bodies ?
a. Binacular b. Telescope c. Periscope d. None of these
8. Unit of force is :
a. Pound b. Dyne c. Newton d. None of these
9. How many watts are there in one horse power ?
a. 476 b. 360 c. 746 d. 180
10. Decibel is a unit of :
a. Pitch b. Sound energy c. Loudness d. Frequency
11.The least count of Vernier Callipers is :
a. 1 cm b. 0.1 cm c. 0.01 cm d. ½ cm
12. Unit of electro-motive force is :
a. Newton b. Joule c. Volt d. Power
13.How many liters are equal to one gallon :
a. 5 b. 4.546 c. 5.125 d. 2.5
14.Cost of electricity for home used is Rs. 3.00 per unit. This unit is called ?
a. 1 Ampere b. 1 Volt c. 1 Joule d. 1 Kilowatt hour
15.Vernier Calipers is used to measuring?
a. Length b. Weight c. Curvature d. None of these
16. Which instrument is used for measuring the purity of milk?
a. Odometer b. Spherometer c. Spectrometer d. None of these
17. SI unit of work is :
a. Newton b. Metre/Second2 c. Watt d. Newton Metre
18. Watt is the unit of :
a. Current b. Potential difference
c. Power d. Ohm
19. What is the unit of current-
a. Ampere b. Joule
c. Ohm d. None of the these
20. The Power of lens is given in :
a. Diopter b. Horse Power c. Light year d. Dyne
21. Which of the following instruments is used in measuring relative humidity ?
a. Barometer b. Sphereometer c. Hygrometer d. Hydrometer
22. How many years forms one cosmic year :
a. 300 Million years
b. 275 Million years
c. 350 Million years
d. None of these
23. What is the unit of surface tension :
a. Joule b. Joule/Second
c. Newton d. None of these
24. What is the unit of Pressure
a. Pound b. Dyne
c. Newton d. Pascal
25. The unit of radioactivity is )
a. Watt b. Volt
c. Curie d. Hertz
26. What is the unit of work
a. Newton b. Foot Pound
c. Dyne d. Joule
27. What is the unit of surface tension
a. Joule b. Joule/second
c. Newton d. None of these
28. Watt is the unit of
a. Current
b. Potential difference
c. Power d. None of these
29. The SI Unit of potential difference is
a. Volt b. Coulomb
c. Ohm d. None of these
30. 1 Ao is equal to
a. 108 m b. 10-8 m
c. 1010 m d. None of these
31. What is the unit of Intensity of electric field
a. Coulomb b. Volt
c. Joule d. New
32. What is the SI unit of Resistance ( )
a. Ampere b. Ohm
c. Volt d. None of these
33. Decibel is the unit of which of the following
a. Sound Power b. Frequency
c. Loudness d. None of these
34. Joules / Coulomb is equal to
a. Ohm b. Volt
c. Ampere d. None of these
35. What is the SI unit of Momentum
a. Kgm/sec2 b. m/sec2
c. gm/sec2 d. Kgm/sec
36. What is the CGS unit of intensity of a magnetic field
a. Gauss b. Dyne
c. Coulomb d. None of these
37. What is the unit of luminous efficiency of an electrical bulb
a. Watt b. Lumen/watt
c. Lumen d. Lux
38. What is the SI unit of Potential Difference
a. Coulomb b. Ohm
c. Volt d. Amphere
39. The Si unit of measurement of frequency is ( )
a. Pascal b. Hertz
c. Meter d. None of these
40. Unit of acceleration due to gravity
a) Nm/sec2 b) Nm2/sec c) Nm2/sec2 d) Nm2/sec-2
41. Unit for angular velocity
a) Radians b) Radians/sec c) m/sec d) m/sec2
42. One Radian ……….
a)580171 b) 570181 c) 570291 d)590271
43. One millimicron ……………. a. 10-7cm b.10-7m c.10-6cm d.10-6m
44. The length of a second pendulum is a. 100cm b.1000cm c. 10cm d.1 cm
45. One nano metre ………. a. 10-9m b. 109m c. 10-9cm d. 109cm
46. 1 A0 =
a. 10-8m b. 10-6m c. 10-8cm d. 108cm
47. One micrometer
a. 106m b.10-6m c.10-6cm d. 106cm
48. Unit of pole strength in SI unit is a. Weber b. ampere-metre
c. ampere/metre d. none
49. Ampere hour is a unit of
a. Charge b. Density c. Magnetic flux d. Specific heat
50. Which of the following has the unit diopter
a. magnetic field
b. power of lens c. luminous intensity d. a & b are corre
51. Rho is denote a. Potential difference b. current c. specific resistance d. conductance
52. Newton X m/sec is the unit of a. power b. energy c. force d. work
53. Joules and erg are the unit of a. work b. energy c. both are correct d. none
54. One Newton is equal to a.10dyne b.105dyne
c. 102dyne d. 107 dyne
55. One joule is equal to
a. 107 erg b.102 erg c. 105 erg d. 10 erg
56. Kilowatt hour is unit of a. energy b. power c. electric charge d. current
57. SI unit of density is
a. kg/m3 b. N X M c. kg/m2 d. kg/m
INVENTIONS AND DISCOVERIES
1. X-rays were discovered by -
a. Thomson b. Bragos c. Johnson d. Roentgen
2. Law of electrical resistance was introduced by :
a. Ohm b. Darwin c. Newton d. NW Thomson
3. Electric bulb was invented by -
a. Rutherford b. Edison c. Mendal d. None of these
OTHERS
1. Jet Engines are -
a. Rotary Engine
b. External Combustion Engine
c. Turbine Engines
d. Reaction Engines
2. Sericulture is connected with production of :
a. Silk b. Cotton c. Cheese d. None of these
3. TNT is a/an ?
a. Explosive b. Fertilizer c. Drug d. Insecticide
4..The anti-particle of electron is ?
a. Proton b. α-particle c. Positron d. None of these
1. Which is a vector quantity ?
a. Speed b. Time c. Distance d. Velocity
2. What is a large group of stars together known as :
a. Planets b. Solar system c. Universe d. Galaxy
3. In which zone of the earth does air exist
a. Stratosphere b. Intermediate zone
c. Troposphere d. None of these
4. What is the middle layer of earth called
a. Core b. Mantle
c. Crust d. None of these
5. Cassiopeia constellation consists of stars :
a. 9 b. 4 c. 7 d. None of these
6. The dimensioned formula is -
a. MLT-2 b. MLT-1 c. ML-1T d. M-1LT
7. A substance which can be drawn into a wire is called
a. Ductile b. Flexible c. Malleable d. Pliable
8. When does a solar eclipse occur :
a. Earth comes between sun and moon
b. Moon comes between sun and earth
c. Sun comes between moon and earth
d. At times of crisis
9. Day-Night happens because ?
a. Because of rains b. Earth rotates on its axis c. Moon revolves around Earth d. None of these
10. ……………. Absorb the Harmful UV radiation from the sun and prevents it’s from reaching the earth ?
a. Insolation b. Ozone layer
c. Atmosphere d. None of these
11.In which of the following is scalar ?
a. Speed b. Force c. Acceleration d. None of these
12. How many states are there in matter
a. 5 b. 2 c. 4 d. 3
13. A position is a particle with ?
a. Same mass as that of a proton but
with a negative
b. Same mass as that of proton and with
a positive
c. Same mass as that of an electron
with a positive charge
d. None of these
14. Hooke’s law states that ?
a. Stress is inversely proportional to the
strain
b. Stress and strain are independent of
each other
c. Stress is proportional to Young’s
modulus
d. Stress is directly proportional to the
strain
15. The dimenstional formula of pressure is
a. ML2T-2 b. ML-1T-2 c. MoLT2 d. MoLT-1
16. Air pressure at sea level is :
a. 760 cm of Hg b. 780 mm of Hg c. 76 cm of Hg d. 7.6 cm of Hg
Which of the following is scalar
a. Velocity b. Speed
c. Force d. None of these
What is the normal atmospheric pressure ( )
a. 720 mm of Hg b. 740 mm of Hg
c. 760 mm of Hg d. 780 mm of Hg
The weight of an object would be minimum when it is placed
a. At the north pole
b. At the south pole
c. At the equator
d. None of these
Where is atmospheric pressure maximum
a. At high altitude b. At sea level
c. At hilly area d. None of these
On which factor buoyancy depends for a given body ( )
a. Weight b. Density
c. Volume d. None of these
In which zone of the earth does air exist
a. Stratosphere
b. Intermediate zone
c. Troposphere
d. None of these
Mass of the earth
a)6.67 X 1011 Kgs b) 6 X 10 24 Kg c) 6.4 X 10 6 Kg d) 6 X 10 42 Kg
The moon is a natural satellite of the a. sun b. earth
c. Venus d. none of these
Ozone layer is badly effected by a. CFC b.No2
c. Cl2 d. All of these
Which is a victor quantity in the following
a. time b. momentum c. volume d. density
Which of the following is scalar quantity
a. electrical potential
b. displacement c. magnetic intensity
d. force
Which of the following is a scalar quantity
a. velocity b. acceleration c. force d. distance
MOTION, FORCE AND GRAVITATION
1. Which of the following utilize Newton’s Law of motion?
a. Archery b. Space Rocket c. Internal Combustion Engine
d. Kite flying
2. If a sprinter covers 200 metres in 20 seconds, what will be its velocity :
a. 10 m/s b. 4000 m/s c. 1/10 m/s d. None of these
3. A body at rest may have which of the following :
a. Speed b. Energy
c. Momentum d. Velocity
4. On which factor buoyancy depends for a given body
a. Weight b. Density
c. Volume d. Speed
5. What is called “change in position in a particular direction of an object” :
a. Velocity b. Accelaration
c. Displacement d. None of these
6. The value of gravity (g) is maximum at which place on earth ?
a. Poles b. Equator c. Poles and Equator d. None of these
7. The change of position in a particular direction is called ?
a. Velocity b. Acceleration
c. Displacement d. Distance
8. What is the formula to calculate Centripetal Force :
a. F = b. F = c. F = d. F = MV2
9. A body starts moving from a state of rest with an acceleration of 0.5 m/s2. After covering a distance of 250 m, the velocity of the body will be?
a. 12.5m/s b. 15.8 m/s
c. 18.7 m/s d. None of these
10. What is the dimension of surfaced Tension :
a. MLT-2 b. MLoT-2 c. MLT2T-2 d. MLT-1
11. A tennis ball of mass 0.25 kg strikes a racket with a velocity of 20 m/s. the player hits the ball resulting in the ball moving in the opposite direction with the same velocity. If the ball stays in contact with the racket for 0.1s then the force acting on the ball will be:
a. 200 N b. 100 N
c. 400 N d. None of these
12. When the speed of a moving object is doubled, its :
a. Kinetic energy increases 4 times
b. Acceleration is doubled
c. Weight is doubled
d. None of these
13. A ball weighing 10g hits a hard surface vertically with a speed of 5m/sec and rebounds with the same speed. The ball remains in contact with the surface for 1/100 sec,. What is the average force exerted by the surface on the ball :
a. 100 Newton b. 10 Newto
c. 0.1 Newton d. None of these
14. A car moving on a horizontal road may be thrown off the road during a turn :
a. Due to the lack of centripetal force
b. Due to the rolling frictional force
between the tyre and road
c. Due to the reaction of the ground
d. None of the above
15. The inability of a body to change its state of rest by itself is called :
a. Inertia of motion b. Conductor
c. Inertia of rest d. Inertia of direction
16. The gravitional force between the Sun and a planet A is ‘F’. What will be the gravitional force action between the Sun and another planet B if the mass of B is double the mass of A and the distance from Sun of B is double as compared to A ?
a. F b. 4F c. 2F d. F/2
17. A train is running 36 km/hrs. it crosses a pole is 25 sec. The length of train is :
a. 350 mtr b. 200 mtr c. 250 mtr d. None of these
A body starts to move from rest. If its acceleration is 10 m/sec2 then how much distance will it cover in 10 secs.
a. 5 m b. 90 m
c. 190 m d. None of these
The equation of relation between force, mass and acceleration is
a. m = aF b. a = mF
c. ma =1/F d. ma = F
All bodies large or small fall with same
a. Velocity b. Acceleration
c. Momentum d. None of these
A trolley is moving down an inclined plane with an acceleration of 2ms-2. What will be the velocity 3 sec after its starts moving
a. 6 m/s b. 5 m/sec
c. 2/3 m/s d. 3/2 m/s
A racing car is moving with an uniform acceleration of 4 ms-2, How much distance will it cover 10 sec after it starts moving from rest
a. 200 m b. 300 m
c. 100 m d. 2000 m
When a body is thrown upward from the surface of the earth, then at the highest point ( )
a. Velocity is Maximum
b. Acceleration is zero
c. Acceleration is Maximum
d. Velocity is zero
A car in moving with a speed of 35 km/h. How much distance will it cover in 12 minutes
a. 14 km b. 35 km
c. 7 km d. 28 km
The value of acceleration due to gravity “g” is nearly
a) 980 cms-2 b) 98 cms-1 c) 9.8 cms-1 d) 9.8 cms-2
The acceleration due to gravity on the moon
a) 1.82m/sec2 b) 1.92m/sec2 c) 1.67m/sec2 d) 1.76 m/sec2
The study of motion of a body under the action of force is called
a) Kinetierr b) dynomics c) Inertia d) Gravity
Every harmonic motion is a
a) Linear motion
b) circular motion
c) rotatory motion
d) periodic motion
Which of the following is correct about unit of the acceleration
a. m/sec2 b. cm/sec2
c. both are correct d. none
All bodies large or small fall with same
a. velocity b. acceleration c. force d. momentum
WORK AND ENERGY
1. A stationary body can have?
a. Velocity b. Momentum
c. Acceleration d. Energy
2. A moving body may not have which of the following :
a. Velocity b. Momentum
c. Kinetic Energy d. Potential energy
3. What is the formula to find Kinetic energy :
a. Mgh b. ½ (mv)2
c. ½ mV2 d.
4. The capacity to do work is called ?
a. Power b. Strength
c. Energy d. Watt
5. The energy possessed by an object due to its motion :
a. Potential Energy b. Electro Energy
c. Wind Energy d. Kinetic Energy
6. When the spring of a watch is wound it will possess which type of energy ?
a. Chemical energy
b. Magnetic energy
c. Potential energy
d. Kinetic energy
7. The rate of doing work is known as ?
a. Work b. Power c. Velocity d. Energy
A body of mass 2 kg is lifted upward to a height of 4 meters. Calculate its potential energy (g=10 m/sec2)
a. 40 Joule b. 20 Joule
c. 80 Joule d. 6 Joule
For a freely falling body
a. Both Kinetic and Potential
energies increases
b. Total mechanical energy
increases
c. Kinetic energy increases and
Potential energy decreases
d. Kinetic energy decreases and
Potential energy increases
If the velocity of a body is increased twice then its Kinetic Energy increases by how many times
a. 2 b. 4
c. 8 d. None of these
Mass energy relation was given by
a. Edison b. Einstein c. Bohr d. Newton
LIGHT AND HEAT
1. Name the defect of eye in which a person cannot simultaneously focus on both horizontal and vertical lines?
a. Astigmatism b. Myopia c. Hypermetropia d. None of these
2. Which of the following colour has longest wavelength in the visible spectrum :
a. Yellow b. Red
c. Green d. None of these
3. What is the relation between Centigrade and Fahrenheit temperature :
a. = b. =
c. = d. None of these
4. Image formed by a concave mirror is ?
a. Virtual b. Real
c. Erect d. None of these
5. The boiling point of water is :
a. 80o C b. 99o C c. 100o C d. None of these
6. Which type of mirror is used in motor cars for rear view ?
a. Convex mirror b. Lens
c. Concave mirror d. None of these
7. What would be the number of images formed for an object placed between two parallel plane mirrors ?
a. 8 b. 2 c. 1 d. Infinite
8. Which of the following colours has longest wavelength :
a. Yellow b. Red
c. Blue d. Green
9. The density of water is maximum -
a. 0 Celcius b. 4 Celcius c. 25 Celcius d. 50 Celcius
10. If a gas suddenly compressed, what will be the effect on its temperature ?
a. Increases b. Decreases c. Remains unchanged d. None of these
11. Which one of the following is not a primary colour -
a. Red b. Green c. Yellow d. all are primary colours
12. At which temperature the Centigrade and Fahrenheit’s scale are equal ?:
a. - 40o b. + 45o c. + 20o d. None of these
13. Convex mirror is used in :
a. Doctor’s Headlamp
b. Search lights
c. Car’s head light
d. Near the driver’s seat
14. Which of the following is used as a magnifying glass ?
a. Concave lens b. Convex lens c. Cylindrical lens d. None of these
15.The image formed by a convex mirror is always :
a. Real and inverted
b. Virtual and erect
c. Real and erect
d. Virtual and inverted
16. Tyndall effect is associated with which property of light?
a. Scattering of light b. Dispersion c. Suspension d. None of these
17. Cylindrical lens are used to correct :
a. Myopia b. Astigmatism c. Hypermetropia d. Colour blindness
18. What is the speed of light :
a.3,00,000 km per sec
b. 331 metre per sec
c.186000 metre per sec
d. None of these
19. Which of the following is used as a magnifying glass ?
a. Concave lens b. Convex lens
c. Cylindrical lens d. None of these
20. Which colour surface will absorb maximum light :
a. Black b. Yellow c. White d. None of these
21. Light is a form of :
a. Energy b. Colour c. Source d. None of these
22. Change 98.4o Fahrenheit into Celsius scale :
a. 35o C b. 34.6o C c. 36.9o C d. None of these
23. Which Lens is used to correct shortsightedness:
a. Plano-concave lens
b. Convex lens
c. Concave lens
d. Convexo-concave lens
24. What is the main reason for occurrence of MIRAGE -
a. Dispersion of light
b. Total internal reflection of light c. Refraction of light
d. Scattering of light
25. Boiling point of water is 100 Degree C. What is its corresponding reading in Kelvin Scale ?
a. 373 b. 273 c. 100 d. 250
26. Which of the following is good conductor of both heat and electricity -
a. Mercury b. Silver
c. Gold d. Brass
27. A student is standing in front of a plane mirror. When the mirror moves towards him at a speed of 10 cm/s then the image moves :
a. Away from him at speed of 20 cm/s
b. Away from him at speed of 10 cm/s
c. Towards him at speed of 20 cm/s
d. None of the above
28. The sky appears blue because :
a. Scattering of water droplets
b. Scattering of air
c. Scattering of dust particles
d. None of these
29. Above natural temperature, thermo e.m.f. ::
a. Changes sign b. Decreases with the rise in
temperature
c. Increase with the rise in temperature
d. Remains constant
30. Red light differs from blue light in its -
a. Frequency b. Intensity c. Amplitude d. None of these
31. A body has mass of 10g and Kinetic energy 200 Joules. The momentum of the body is :
a. 4 Kg m/s b. Kg m/s c. 0 d. None of these
32. Chromatic aberration in a lens is caused by -
a. Reflection b. Dispersion c. Interference d. None of these
33. The density of water is maximum at -
a. 4o Celcius b. 0o Celcius c. 50o Celcius d. None of these
34. Transmission of heat in metal is done by :
a. Conduction b. Radiation c. Convection d. None of these
35. The image formed by a spherical mirror is virtual. The mirror is -
a. Convex b. Convex or concave c. Concave d. None of these
36. With a rise temperature, the surface tension of a liquid -
a. Decrease b. Does not change c. Changes erratically d. None of these
37. Which lens is used in simple microscope -
a. Convex lens b. Concave lens c. Plain lens d. Special lens
34. Transmission of heat in metal is done by :
a. Conduction b. Radiation c. Convection d. None of these
35. The image formed by a spherical mirror is virtual. The mirror is -
a. Convex b. Convex or concave c. Concave d. None of these
What should be the position of an object in order to obtain a real, inverted image of the same size as the object by using a convex lens ( )
a. Between the lens and the focus
b. At the focus
c. At the center of curvature
d. At infinity
The power of a lens is +5D. The lens is
a. A convex lens of focal length .05 m
b. A convex lens of focal length 20 m
c. A convex lens of focal length .50 m
d. None of these
Which of the following lenses is used when a person feels difficulty in seeing a distant object
a. Convex lens b. Concave lens
c. Both convex and concave
d. None
The light with longest wave length
in the visible spectrum is
a. Yellow b. Red
c. Violet d. None of these
In a motor car, which mirror is used for rear view
a. Plane mirror b. Convex mirror
c. Concave mirror d. None of these
What is the type of image formed on the retina of the eye
a. Upright and Real
b. Upright and Virtual
c. Real and Inverted
d. None of these
A person standing in front of a mirror finds his image smaller then himself and erect. The mirror is of which kind
a. Concave b. Convex
c. Plane d. None of these
The focal length of a concave mirror is 10 cm. Its radius of curvature will be how much ( )
a. 6 cm b. 5 cm
c. 20 cm d. None of these
The image formed by a convex mirror is always
a. Real and inverted
b. Virtual and erect
c. Real and erect
d. None of these
The focal length of concave mirror is 10 cm. its radius of curvature will be
a. 6 cm b. 20 cm
c. 10 cm d. None of these
Which colour of the light has the maximum wavelength
a. Violet b. Red
c. Green d. None of these
When a white light passes through a prism, the colour which has the least deviation is
a. Red b. Violet
c. Green d. None of these
A curved mirror has a radius of curvature 28 cm. The focal length of this is
a. 28 cm b. 40 cm
c. 14 cm d. None of these
Tyndall effect is associated with which properly of light
a. Scattering of light b. Dispersion
c. Suspension d. None of these
The power of a lens is -2D. What will be its focal length
a. -0.05 b. -0.5
c. -5.0 d. -50.0
Write down the lens formula
a. - = b. + =
c. = + d. None of these
According to Ohm’s Law
a. R = VI b. R =
c. R = d. V =
Splitting of sun light into seven colours is known as
a. diffraction b. desperation c. deviation d. deflection
Speed of light in vacuum in
a. 5X103m/s b. 3X105m/s
c. 3X108m/s d. 3X10-8m/s
Colour of light are due to difference in
a. size of corpuscles
b. wave length
c. velocity
d. frequency
ELECTRICITY AND MAGNETISM
1. Which form of Iron ore found in nature has natural magnetic properties?
a. Haematite b. Magnetite c. Bauxite d. None of these
2. What is the nature of Electric circuits for domestic use :
a. Series b. Parallel c. Combination d. None of these
3. Purest form of Iron is :
a. Cast Iron b. Wrought Iron
c. Steel d. None of these
4. What is the magnetism at the centre of a bar magnet ?
a. Maximum b. Zero
c. Minimum d. Unknown
5. Which of the following substance is magnet :
a. Mercury b. Iron c. Gold d. Silver
6. Which type of magnet is used in electric bell ?
a. Horse shoe magnet
b. Bar magnet
c. Electrical magnet
d. Temporary magnet
7. Elecric bulb is connected to a 220V generator. The current is 0.50A What is the power of the bulb ?
a. 100W b. 110W c. 120W d. None of these
8. Which of the following is best conductor of electricity:
a. Copper b. Silver c. Iron d. Steel
9. Which non metal conducts electricity ?
a. Silicon b. Sulphur c. Graphite d. None of these
10. Law of electrical resistance was introduced by ?
a. Ohm b. Darwin c. Newton d. Joule
11. A condenser is used ?
a. To collect charge
b. To produce electricity
c. To produce charge
d. None of these
12. To which wire is the fuse connected in a three pin plug ?
a. Earth wire
b. Both live and neutral wires c. Live wire
d. None of the above
13. North pole of magnet ……………………. The North pole of the other magnet.
a. Repels b. Attracts c. Balances d. None of these
14. Current in conductor depends upon ?
a. Resistance b. Potential difference c. Electric charge
d. Potential difference and resistance
15. If ‘n’ equal resistances are first connected in Series and then connected in Parallel, the ratio of the maximum to the minimum resistance is :
a. n b. n2 c. 1/n d. None of these
16. The electric generator functions according to ?
a. Fleming’s Right Hand rule
b. Fleming’s Left Hand rule c. Fleming’s Both Hand rule d. Alternating current rule
17. Two 60 watt electric bulbs are used in a house for 8 hours daily. Calculate electricity consumed in 30 days ?
a. 14.4 K Watt Hr b. 28.8 Watt Hr c. 28.8 Watt
d. Cannot be calculated
18. The absence of a magnetic monopole is explained by ?
a. Fleming’s law
b. Gauss’s law
c. Coulomb’s law d. Lorentz law
19. Specific resistance of a wire depends upon.
a. Its length b. Its dimensions c. Its material d. Its cross-sectional area
20. Electric power is transmitted over long distance through conduction wire at high voltage because ?
a. Generator produce electric energy at very high voltages
b. High voltage travels faster c. This entails less power losses d. It reduces the possibility of theft of the wire
21. Three resistances of 2Ω, 4Ω and 8Ω are connected in parallel. Their equivalent resistance is.
a. 14Ω b. 10Ω c.Ω d. Between 2Ω and 8Ω
Permanent magnets are made of
a. Copper b. Soft Iron
c. Silver d. Steel
How is magnetic flux expressed
a. Dynes b. Joule
c. Gauss d. None of these
Magnetism at the center of a bar magnet is
a. Maximum b. Minimum
c. Zero d. None of these
The angle between the magnetic axis and geographical axis of the earth is
a. 18o b. 36o
c. 90o d. 15o
Magnetic substance a. Brass b. Wood c. Nickel d. Paper
Non-magnetic substance a. Iron b. Cobalt c. Nickel d. Brass
Which one of the following is not a diamagnetic substance
a. air b. water c. Iron d. bismuth
Example of diamagnetic substance
a. Fe b. Ni c. Wood d. Coppe
Example of ferromagnetic substance
a. water b. paper c. aluminium d. Steel
Oxygen is a …….. magnetic substance
a. dio b. para c. ferro d. none
SOUND AND WAVE MOTION
1. Which equation is related to Ohm’s Law?
a. PV=TR b. VxT c. P=MV d. VxPR
2. In which medium sound waves cannot travel :
a. Air b. Water c. Vacuum d. None of these
3. In which medium sound travels at minimum speed :
a. Water b. Air
c. Mercury d. Iron
4. Which of the following is associated with Doppler effect ?
a. Sound b. Light
c. Magnetism d. None of these
5. Which waves are used in SONAR :
a. X-rays b. Ultrasonic Waves c. Mechanical Waves d. None of these
6. Air pressure at sea level is ?
a. 76 cm of Hg b. 780 mm of Hg c. 7.6 cm of Hg d. 760 cm of Hg
7. Which of the following is not an electromagnetic wave ?
a. Gamma ray b. Light ray c. X-ray d. Cathode ray
8. Sound travels fastest in :
a. Air b. Steel c. Vaccum d. Water
9. Propagation of sound wave is possible only if there is …………….
a. Vacuum b. A medium c. Condensation d. Rarefaction
10. Which of the following radiations has the least wavelength ?
a. α – rays b. X - rays c. - rays d. Gamma rasy
11.On which scale loudness of sound is measured ?
a. Hertz b. Mega c. Decible d. None of these
12. What is the speed of sound in air :
a. 325 m/sec b. 332 m/s c. 232 m/s d. 340 m/s
13. When a wave travels from one medium to another, the quantity which will not change is :
a. Amplitude b. Frequency c. Speed d. Wavelength
14. A source has a frequency of 10 Hz. The time period will be ?
a. 103 S b. 102 S c. 10-3 S d. 10 S
15. X-rays travel with the velocity of ?
a. Sound waves b. Ultrasonic waves c. Supersonic waves d. None of these
16. The observer is moving away from a stationary source of sound emitting waves of constant frequency the apparent frequency will be :
a. First decrease and then increase
b. Decrease c. Increase d. None of these
If the speed of a wave in 100 m/sec and its wavelength is 100 cm, calculate the frequency of the wave
a. 100 Hz b. 10000 Hz
c. 10 KHz d. 10 Hz
A man hears the sound of thundering 4 seconds after the lightning. What is the distance between the man and the lightning ( Speed of light in air 330 m/s)
a. 8.25 km b. 1320 m
c. 13.20 km d. 13200 m
What are Sound waves
a. Longitudinal b. Transverse
c. Both d. None of these
Sound travels faster in which of the following
a. Water b. Air
c. Steel d. None of these
SUN AND SOURCES OF ENERGY
1. Nuclear fusion occurs in ?
a. Atomic bomb b. Hydrogen bomb c. Neutron bomb d. Nuclear Reactor
2. The main source of heat is :
a. Chemical reaction
b. The interior of the earth
c. The sun d. The star
3. Gobar gas contains which gas :
a. Propane b. Methane
c. Ethane d. None of these
4. Uncontrolled nuclear chain reaction is the basis of :
a. Nuclear reactor b. Atom bomb c. Hydrogen bomb d. None of these
UNITS AND MEASUREMENTS
1. Number of Joules(J) in one Kilowatt - hours?
a. 600,000 joules b. 6,600,000 joules c. 10,000 joules d. None of these
2. What is the unit of force in MKS system :
a. Dyne b. Newton c. Ergs d. Joule
3. What is measured by Seismograph :
a. Speed of Wind b. Rain
c. Earthquake d. None of these
4. The unit of Power is -
a. Jule per second b. Jule
c. Jule per second and watt
d. None of the these
5. Unit of consumption of electricity is :
a. Mega Watt-hour b. Kilo Watt-hour c. Mili Watt-hour d. Gram Watt-hour
6. What is the unit of resistance ?
a. Ohm b. Volt c. Amphere d. None of these
7. Which instrument is used to see heavenly bodies ?
a. Binacular b. Telescope c. Periscope d. None of these
8. Unit of force is :
a. Pound b. Dyne c. Newton d. None of these
9. How many watts are there in one horse power ?
a. 476 b. 360 c. 746 d. 180
10. Decibel is a unit of :
a. Pitch b. Sound energy c. Loudness d. Frequency
11.The least count of Vernier Callipers is :
a. 1 cm b. 0.1 cm c. 0.01 cm d. ½ cm
12. Unit of electro-motive force is :
a. Newton b. Joule c. Volt d. Power
13.How many liters are equal to one gallon :
a. 5 b. 4.546 c. 5.125 d. 2.5
14.Cost of electricity for home used is Rs. 3.00 per unit. This unit is called ?
a. 1 Ampere b. 1 Volt c. 1 Joule d. 1 Kilowatt hour
15.Vernier Calipers is used to measuring?
a. Length b. Weight c. Curvature d. None of these
16. Which instrument is used for measuring the purity of milk?
a. Odometer b. Spherometer c. Spectrometer d. None of these
17. SI unit of work is :
a. Newton b. Metre/Second2 c. Watt d. Newton Metre
18. Watt is the unit of :
a. Current b. Potential difference
c. Power d. Ohm
19. What is the unit of current-
a. Ampere b. Joule
c. Ohm d. None of the these
20. The Power of lens is given in :
a. Diopter b. Horse Power c. Light year d. Dyne
21. Which of the following instruments is used in measuring relative humidity ?
a. Barometer b. Sphereometer c. Hygrometer d. Hydrometer
22. How many years forms one cosmic year :
a. 300 Million years
b. 275 Million years
c. 350 Million years
d. None of these
23. What is the unit of surface tension :
a. Joule b. Joule/Second
c. Newton d. None of these
24. What is the unit of Pressure
a. Pound b. Dyne
c. Newton d. Pascal
25. The unit of radioactivity is )
a. Watt b. Volt
c. Curie d. Hertz
26. What is the unit of work
a. Newton b. Foot Pound
c. Dyne d. Joule
27. What is the unit of surface tension
a. Joule b. Joule/second
c. Newton d. None of these
28. Watt is the unit of
a. Current
b. Potential difference
c. Power d. None of these
29. The SI Unit of potential difference is
a. Volt b. Coulomb
c. Ohm d. None of these
30. 1 Ao is equal to
a. 108 m b. 10-8 m
c. 1010 m d. None of these
31. What is the unit of Intensity of electric field
a. Coulomb b. Volt
c. Joule d. New
32. What is the SI unit of Resistance ( )
a. Ampere b. Ohm
c. Volt d. None of these
33. Decibel is the unit of which of the following
a. Sound Power b. Frequency
c. Loudness d. None of these
34. Joules / Coulomb is equal to
a. Ohm b. Volt
c. Ampere d. None of these
35. What is the SI unit of Momentum
a. Kgm/sec2 b. m/sec2
c. gm/sec2 d. Kgm/sec
36. What is the CGS unit of intensity of a magnetic field
a. Gauss b. Dyne
c. Coulomb d. None of these
37. What is the unit of luminous efficiency of an electrical bulb
a. Watt b. Lumen/watt
c. Lumen d. Lux
38. What is the SI unit of Potential Difference
a. Coulomb b. Ohm
c. Volt d. Amphere
39. The Si unit of measurement of frequency is ( )
a. Pascal b. Hertz
c. Meter d. None of these
40. Unit of acceleration due to gravity
a) Nm/sec2 b) Nm2/sec c) Nm2/sec2 d) Nm2/sec-2
41. Unit for angular velocity
a) Radians b) Radians/sec c) m/sec d) m/sec2
42. One Radian ……….
a)580171 b) 570181 c) 570291 d)590271
43. One millimicron ……………. a. 10-7cm b.10-7m c.10-6cm d.10-6m
44. The length of a second pendulum is a. 100cm b.1000cm c. 10cm d.1 cm
45. One nano metre ………. a. 10-9m b. 109m c. 10-9cm d. 109cm
46. 1 A0 =
a. 10-8m b. 10-6m c. 10-8cm d. 108cm
47. One micrometer
a. 106m b.10-6m c.10-6cm d. 106cm
48. Unit of pole strength in SI unit is a. Weber b. ampere-metre
c. ampere/metre d. none
49. Ampere hour is a unit of
a. Charge b. Density c. Magnetic flux d. Specific heat
50. Which of the following has the unit diopter
a. magnetic field
b. power of lens c. luminous intensity d. a & b are corre
51. Rho is denote a. Potential difference b. current c. specific resistance d. conductance
52. Newton X m/sec is the unit of a. power b. energy c. force d. work
53. Joules and erg are the unit of a. work b. energy c. both are correct d. none
54. One Newton is equal to a.10dyne b.105dyne
c. 102dyne d. 107 dyne
55. One joule is equal to
a. 107 erg b.102 erg c. 105 erg d. 10 erg
56. Kilowatt hour is unit of a. energy b. power c. electric charge d. current
57. SI unit of density is
a. kg/m3 b. N X M c. kg/m2 d. kg/m
INVENTIONS AND DISCOVERIES
1. X-rays were discovered by -
a. Thomson b. Bragos c. Johnson d. Roentgen
2. Law of electrical resistance was introduced by :
a. Ohm b. Darwin c. Newton d. NW Thomson
3. Electric bulb was invented by -
a. Rutherford b. Edison c. Mendal d. None of these
OTHERS
1. Jet Engines are -
a. Rotary Engine
b. External Combustion Engine
c. Turbine Engines
d. Reaction Engines
2. Sericulture is connected with production of :
a. Silk b. Cotton c. Cheese d. None of these
3. TNT is a/an ?
a. Explosive b. Fertilizer c. Drug d. Insecticide
4..The anti-particle of electron is ?
a. Proton b. α-particle c. Positron d. None of these