General Physics MCQ Solved Paper for NEET PG

1. The atmosphere gets heated up mainly by
A. direct sun's rays
B. radiation from earth's surface
C. radiogenic heat (resulting from radioactive decay)
D. cosmic rays coming from space
Answer : B

2. The cell that can be recharged, after it has run down, by passing a direct current through it from a source of current is
A. Voltaic cell
B. Leclanche cell
C. Dry cell
D. An accumulator
Answer : D

3. When sound waves travel from one medium to another, the quantity which remains unchanged is its
A. speed
B. frequency
C. wavelength
D. All the above
Answer : B

4. The asteroids belt lies between the orbits of
A. Earth and Mars
B. Venus and Earth
C. Mars and Jupiter
D. Moon and Mars
Answer : C

5. The maximum displacement of the particle in a mechanical wave motion is known as
A. amplitude
B. vibration
C. frequency
D. phase
Answer : A

6. Diamond shines because of its
A. purity
B. hardness
C. high density
D. high refractive index and low critical angle
Answer : D

7. Which of the following is wrongly matched?
A. electric current - ampere
B. resistance - Ohm
C. electric power - volt
D. electric charge Coulomb
Answer : C

8. A solar eclipse occurs when the earth, the sun and the moon are in a straight line, and
A. when the moon passes between the sun and the earth
B. when the sun comes between the earth and the moon
C. when the earth comes between the sun and the moon
D. on a full moon day
Answer : A

9. The coil of an electric heater is made of
A. Platinum
B. Tungsten
C. Nichrome
D. Copper
Answer : C

10. Pyrometers are instruments used
A. for measuring the velocity of wind
B. in the manufacture of fireworks
C. in finding the coefficient of apparent expansion of a liquid
D. for measuring high temperatures
Answer : D

11. The electron has a mass equal to
A. 1.9 x 10-13 kg
B. 9.1 x 10-31 kg
C. 1 x 10-15 kg
D. 1.6 x 10-19 kg
Answer : B

12. The number of galaxies that are visible without telescope on clear dark nights and away from bright lights is
A. one
B. two
C. three
D. infinite
Answer : C

13. Tap water is placed in an open pad and allowed to evaporate. After some time the temperature of water
A. increases to a great extent
B. increases slightly
C. decreases slightly
D. decreases rapidly
Answer : C

14. Which physical quantity is measured in watts
A. power
B. kinetic energy
C. momentum
D. impulse
Answer : A

15. Which of the following wires of same dimensions offers least resistance to the ,flow of current?
A. copper
B. aluminium
C. silver
D. nichrome
Answer : C

16. A simple mercury barometer is found in a slightly slanting position. The atmospheric pressure
A. is found by measuring the slanting height of the mercury column
B. is given by the vertical height
C. cannot be measured with it
D. can be measured by both the methods described above
Answer : B

17. The direction of heat flow between two objects depends on
A. their heat contents
B. their masses
C. their temperatures
D. whether they are in solid, liquid or gaseous state
Answer : C

18. If a body is taken from the earth to the moon
A. both its mass and weight will be different
B. its mass will be different but the weight will remain the same
C. its mass and weight will both remain unchanged
D. its mass will remain the same but weight will be different
Answer : D

19. The temperature, surface features, length of days and nights of a planet depend on
A. its atmosphere
B. its distance from the sun
C. its rotation
D. All the above
Answer : D

20. Of the following which has got the highest frequency?
A. ultraviolet rays
B. gamma rays
C. radio waves
D. infrared waves
Answer : B

21. A man stands in a lift which accelerates upwards. The resultant reaction force on the floor of the lift is
A. greater than the weight of the man
B. less than the weight of the man
C. same as the weight of the man
D. zero
Answer : A

22. We always see only one side of the moon because
A. the sun comes in between the earth and moon
B. the moon is stationary
C. the time taken by the moon to rotate on its axis is the same as the time taken by it to revolve round the earth
D. moon revolves round the sun
Answer : C

23. When ice melts, Its volume
A. decreases
B. increases
C. remains the same until all the ice has melted and then increases
D. remains the same
Answer : A

24. The force that keeps a body in a circular motion is called
A. the centripetal force
B. the centrifugal force
C. the frictional force
D. All the above
Answer : A

25. The star nearest to the sun is
A. Proxima Centauri
B. Sirius
C. Aldebaran
D. Vega
Answer : A

26. The instrument used to determine the RD (Relative Density) of a liquid by the principle of floatation is
A. Hygrometer
B. Hypsometer
C. Hydrometer
D. Densimeter
Answer : C

27. Out of the following which element has the longest half-life period?
A. Radium
B. Radon
C. Uranium-238
D. Plutonium
Answer : C

28. Formation of shadows can be explained by
A. rectilinear propagation of light
B. reflection
C. refraction
D. total internal reflection
Answer : A

29. The Solar System lies near the edge of a galaxy known as
A. The Milky Way
B. Radio Galaxy
C. Andromeda Nebula
D. Magellanic Clouds
Answer : A

30. A convex mirror always produces
A. an erect, virtual image of diminished size
B. an erect, real image of diminished size
C. an erect, real image of double size
D. a virtual image of double size
Answer : A

31. The period of oscillation of a simple pendulum depends upon
A. the mass of its bob
B. the material of the bob
C. the amplitude of vibration
D. acceleration due to the gravity at the site of experiment
Answer : D

32. The weight of a body is
A. maximum at the equator
B. minimum at the equator
C. minimum at the poles
D. the same everywhere
Answer : B

33. A rod of brass is held in hand and rubbed with fur. The rod is found to have
A. no charge
B. positive charge
C. negative charge
D. can't be said
Answer : A

34. A radio set that uses valves does not start operating immediately when it is switched on whereas a set containing only tranaistors operates immediately. The reason for this is that
A. the valve filaments have low resistance
B. valve-radio sets work at a higher voltage
C. transistor set has a low resistance
D. filaments of the valves cake time to beat up and function
Answer : D

35. An ohm is a unit of
A. potential difference
B. resistance
C. current
D. All the above
Answer : B

36. The SI unit of electric current is
A. the ampere
B. the volt
C. the ohm
D. the coulomb
Answer : A

37. The device used to record the sound is
A. a microphone
B. a headphone
C. a phonograph
D. an amplifier
Answer : C

38. The period of a geostationary (synchronous) satellite orbiting the earth over the equator la
A. 16 hours
B. 12 hours
C. 20 hours
D. 24 hours
Answer : D

39. The cover of a solar cooker is made of glass because
A. it absorbs sun's rays
B. it reflects sun's rays
C. it retains the heat inside by the greenhouse effect
D. it radiates heat better than metals
Answer : C

40. In a concert hall reverberation is controlled by
A. reduction of seating capacity in the hall
B. increase of sound intensity in the hall
C. lining the walls, with leather panels put on over a layer of sound absorbent glass fibre
D. by opening the doors and windows of concert hall
Answer : C

41. A person does not sink in the Dead Sea because
A. the sea contains a large amount of other salts besides sodium chloride
B. the density of the person is less than the density of the Dead Sea water
C. of the surface tension due to salt water in the Dead Sea
D. of difference in mass
Answer : B

42. A lightning conductor installed in a building
A. does not allow the lightning to fall on the building at all
B. drives away the charged clouds
C. forces the lightning to fall on other buildings near that building
D. conducts the electric charges to the ground when lightning strikes the building
Answer : D

43. The speed of sound in air at 0° C is approximately
A. 4 x 10 8 m/s
B. 1500 m/s
C. 330 m/s
D. 500 m/s
Answer : C

44. Which of the following can produce electricity?
A. resistor
B. thermocouple
C. light bulb
D. neon tube
Answer : B

45. Rain drops acquire spherical shape due to
A. viscosity
B. surface tension
C. friction
D. elasticity
Answer : B

46. When a charged rod is brought near a collection of small pith balls, the balls
A. will jump rapidly up and down for a short time
B. will remain unaffected
C. Both (a) and (b) above
D. It will produce electric shock
Answer : A

47. Acoustics is a property or
A. Physics
B. Chemistry
C. Biology
D. Economic
Answer : A

48. The inside of both the walls of a thermos flask is silvered i.e., on the vacuum side in order to reduce heat loss by
A. convection
B. radiation
C. conduction
D. All the three
Answer : B

49. Choose the scalar quantity from the following physical quantities
A. force
B. velocity
C. acceleration
D. speed
Answer : D

50. The largest planet in the solar system is
A. Neptune
B. Uranus
C. Jupiter
D. Saturn
Answer : C