General Physics MCQ Solved Paper for LIC ADO

1. The numerical reading of the Fahrenheit thermometer of a given temperature
A. is proportional to that of the Celsius thermometer
B. is always greater than that of the Celsius thermometer
C. is always less than that of the Celsius thermometer
D. may be greater than or less than or equal to that of the Celsius thermometer
Answer : D

2. Metals are good conductors of heat because
A. they contain free electrons
B. their atoms are relatively far apart
C. their atoms collide frequently
D. they have reflecting surfaces
Answer : A

3. When a bullet is fired from a gun
A. the gun moves forward
B. the gun jumps up
C. the gun does not move
D. the gun recoils with the same momentum as the bullet
Answer : D

4. The ballistic missile, Agni 11, tested by India has a maximum range of
A. 1000 km
B. 1500 km
C. 2000 km
D. 500 km
Answer : C

5. Credit for starting Space Science Research in India goes to
A. HJ Bhabha
B. SS Bhatnagar
C. V Sarabhai
D. CV Raman
Answer : C

6. The focal length or lens or the eye is under the control or the
A. iris
B. pupil
C. ciliary body
D. cornea
Answer : C

7. The stars that shine brightly then dimly and then brightly are known as
A. meteors
B. binaries
C. variable stars
D. bright stars
Answer : C

8. A small bubble of air deep down in a lake rises up to the top of the lake. The volume of the bubble on coming up will
A. increase
B. decrease
C. will not change
D. first increase and then decrease
Answer : A

9. Which of the following has the highest refractive index?
A. Crown glass
B. Water
C. Flint glass
D. Diamond
Answer : D

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

11. A boy is swinging a ball attached to a string in a horizontal circle. If the string snaps
A. the ball will travel towards the centre of the circle and fall down
B. it will continue to travel along a tangent to the circle at the point the ball was at the time of snapping and finally fall down
C. it will fall down at the same place where the string breaks
D. None of these
Answer : B

12. The velocity of sound in air
A. increases as the square root of the absolute temperature
B. decreases with temperature
C. is independent of temperature
D. None of these
Answer : A

13. 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

14. When one enters a dark room after being in bright light one is not able to see anything clearly for a while because
A. the retina of the eye moves forward
B. the retina of the eye moves backward
C. c).the iris is unable to dilate the pupil immediately to be able to see things
D. the eye has no power of accommodation
Answer : C

15. Red Light is used as a dancer signal because
A. it is pleasing to the eye
B. it has a traditional colour
C. it is easily distinguishable
D. it is most sensitive to the human eye
Answer : D

16. Acoustics' la a branch or study dealing with
A. historical sites
B. architecture
C. sound
D. trigonometry
Answer : C

17. The maximum range of most TV signals is from 121 to 240 km only because
A. the curvature of earth limits the range of reception
B. the signals are weak
C. the signals are absorbed by air
D. the antennae are not powerful enough
Answer : A

18. A bucket of water is hung from a spring balance. A piece of iron is suspended in the water without touching the sides or touching the bottom of the bucket. The reading of the spring balance
A. will increase
B. will decrease
C. does not change
D. varies with the increase of depth of the immersion of the iron piece
Answer : A

19. The completely dark portion of a shadow of an object is known as
A. umbra
B. penumbra
C. image
D. black portion of light
Answer : A

20. In experiments on static electricity the standard method for obtaining small amounts of positive electricity is to rub
A. a glass rod with flannel
B. an abonite rod with flannel
C. a glass rod with silk
D. Any of the above
Answer : C

21. 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

22. Drinks kept in a vacuum flask remain hot or cold as the case may be for a long time because
A. both walls are silvered on the vacuum side
B. there is vacuum between the double walls
C. the cork is a poor conductor of heat
D. of all the above
Answer : D

23. An electric kettle used for boiling hard water has a white scale deposited on its heating element. This consists or
A. sugar
B. sodium carbonate
C. common salt
D. carbonates of calcium and magnesium
Answer : D

24. When a body is projected upwards
A. the time for the upward journey and downward journey are the same
B. the upward journey takes more time
C. the downward journey takes more time
D. Cant be said
Answer : A

25. A hydrogen bomb is based on
A. nuclear fusion
B. nuclear fission
C. Both (a) and (b) above
D. Neither (a) nor (b)
Answer : A

26. In a refrigerator, the refrigerant is
A. Nitrogen
B. Oxygen
C. Chlorine
D. Freon
Answer : D

27. Resistance is measured in
A. Volts
B. Amperes
C. ohms
D. coulombs
Answer : C

28. The Indian Space Research Organisation (ISRO) is located at
A. Thumba
B. Bangalore
C. Ahmedabad
D. New Delhi
Answer : B

29. We see the flash of lightning before hearing the thunder because
A. light travels very much faster than sound
B. sound travels faster than light
C. lightning occurs nearer than thunder
D. both travel at the same speed
Answer : A

30. Metals are good conductors of heat because
A. they contain free electrons
B. their atoms are relatively far apart
C. their atoms collide frequently
D. they have reflecting surfaces
Answer : A

31. When ice just melts
A. there is no change in volume
B. there is no change in temperature
C. heat is given out
D. there is no change of state
Answer : B

32. X-rays are
A. deflected by electric field
B. deflected by magnetic field
C. slightly deflected by electric field and magnetic field
D. not deflected by electric and magnetic fields
Answer : D

33. Sound waves
A. are electromagnetic waves
B. can easily pass through vacuum
C. are always transverse waves
D. require a material medium for propagation
Answer : A

34. In the ramous equation of Einstein E = mc2 , 'c' denotes.
A. velocity of sound
B. velocity of light
C. a constant factor
D. wavelength of light
Answer : B

35. Which of the following is not electromagnetic waves?
A. heat waves
B. sound waves
C. radio waves
D. light waves
Answer : B

36. A workman was working on a rail track. A young boy at a distance holds his ear close to the railway track. The boy was able to hear the sound of each blow or the workman twice. It is because
A. speed of sound is greater in steel than in air
B. speed of sound is greater in air than in steel
C. part of sound waves is reflected between rail tracks
D. the boy's ears are at a different distance from the source
Answer : A

37. The velocity of sound in a medium is
A. directly proportional to its pressure
B. inversely proportional to the square root of its pressure
C. directly proportional to the square root of its pressure
D. independent of its pressure
Answer : D

38. A permanent magnet may be demagnetised by
A. placing it inside a solenoid through which an alternating current is flowing
B. heating the magnet to redness and then allowing it to cool
C. dropping it several times or hammering it while lying east-west
D. All the above
Answer : D

39. A ruse wire is characterised by
A. high resistance and high melting point
B. high resistance and low melting point
C. low resistance and high melting point
D. low resistance and low melting point
Answer : D

40. A man stands on the pan of a balance holding a fish in his right hand and bucket of water in his left hand. If he transfers the fish into the bucket, the total weight on the pan
A. increases
B. decreases
C. remains the same
D. first increases and then decreases
Answer : C

41. A tube light works on the principle of
A. chemical, heating and magnetic effects of electricity
B. discharge of electricity through gases
C. the action of ultraviolet radiation on certain fluorescent materials
D. Both (b) and (c) above
Answer : D

42. Radio waves sent out by radio stations are reflected by
A. troposphere
B. stratosphere
C. mesosphere
D. ionosphere
Answer : D

43. The pressure of air at high altitude is less than the atmospheric pressure at the sea level. Hence the boning point of water at a hill top
A. is more than at sea level
B. is equl to that sea level
C. is less than at sea level
D. depends on the surrounding temperature
Answer : C

44. The principle on which a Jet engine works is
A. conservation of mass
B. Newtonian law of action and reaction
C. conservation of angular momentum
D. None of the above
Answer : B

45. A piece of ice is Boating In water kept in a beaker. When all the ice melts the level of water will
A. first rise and then fall
B. fall
C. remain the same
D. rise
Answer : C

46. The resistance of a wire depends on
A. the material of the wire
B. the length of the wire
C. the cross section of the wire
D. All the above
Answer : D

47. A nuclear reactor is said to have become 'critical' when
A. it stops due to malfunctioning
B. it starts emitting dangerous radioactive radiations
C. it is shut down to avoid explosion
D. it is ready to produce controlled energy
Answer : D

48. If a bar magnet is broken into two pieces
A. both pieces will lose their magnetism
B. one piece will have North Pole on both ends and the other South Pole on its both ends
C. each will remain a magnet with North Pole at one end and South Pole at the other
D. the longer piece will behave as a bar magnet while the smaller will have no magnetism at all
Answer : C

49. 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

50. Hot water is poured simultaneously in four metallic tumblers painted outside with different paints. After some time the water will be found to have cooled most in the tumbler painted.
A. rough white
B. rough black
C. shining white
D. shining black
Answer : B