1000+ General Physics Multiple Choice Question Answer [Solved]

1. The rings of Saturn were discovered by
A. Galileo
B. Bhaskara
C. Aryabhatta
D. Ptolemy
Answer : A

2. The electroplating of a metallic article
A. protects the article from atmospheric corrosion
B. gives it a more attractive appearance
C. Both (a) and (b) above
D. None of the above
Answer : C

3. When we sweat, we feel comfortable under a fan because
A. the air circulated by the fan is cool
B. the fan produces convection currents of air
C. the air circulated by the fan quickens the evaporation of the moisture on our skin
D. the air takes away the heat from our body
Answer : C

4. Cosmic rays contain
A. protons and electrons
B. alpha particles
C. gamma rays
D. All the above
Answer : D

5. A solid ball of metal has a spherical cavity inside it. When the ball is heated the volume of the cavity will
A. increase
B. decrease
C. remain unaffected
D. have its shape changed
Answer : A

6. A thermostat is a device used
A. for automatically maintaining a steady temperature
B. for measuring electricity
C. to reduce the voltage of electricity
D. for producing heat
Answer : A

7. 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

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

9. Which of the following is fissionable?
A. U-234
B. U-235
C. U-238
D. Both (b) and (c)
Answer : B

10. The light from the star nearest to the sun reaches the earth in
A. 8 minutes
B. 4.3 years
C. 12 seconds
D. 24 hours
Answer : B

11. In an electrical circuit, a fuse is connected
A. in the live wire
B. in the neutral wire
C. in the earth wire
D. anywhere
Answer : A

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

13. The ringing of an electric bell in an enclosed evacuated glass bell jar is not heard outside because
A. the ringing is not loud enough
B. the glass of the bell jar absorbs the sound waves
C. the bell jar is too small
D. there is no air or -any other gas in the bell jar
Answer : D

14. X-rays were discovered by
A. Wilhelm Roentgen
B. WO Coolidge
C. Henry Cavendish
D. William Watson
Answer : A

15. If a man wants to hear clearly the echo of a sound produced by him from a hill, the hill should be away from him by a minimum distance of
A. 330 m
B. 33 m
C. 16.5 m
D. 165 m
Answer : C

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

17. When a bowler spins a ball, it changes its direction in the air. This is due to
A. turbulence caused by the wind
B. buoyancy of air
C. unequal pressures acting on it
D. sudden change in the direction of the wind
Answer : C

18. The Indian Satellite System used for domestic communications, television and meteorology is known as
A. INSAT
B. Bhaskara
C. Aryabhatta
D. All the above
Answer : A

19. The Space Application Centre for training in Satellite Communication Technology is located at
A. Bangalore
B. Mumbai
C. Ahmedabad
D. New Delhi
Answer : C

20. 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

21. 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

22. The minimum velocity required by a satellite to escape earth's gravitational pull is
A. 18 km/s
B. 11.2 km /s
C. 21 km/s
D. 35 km/s
Answer : B

23. A proton is
A. the ionised hydrogen molecule
B. the nucleus of helium atom
C. the nucleus of hydrogen atom
D. the positive counterpart of electron
Answer : C

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

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

26. If an object is placed between two parallel plane mirrors, the number of images formed will be
A. 1
B. infinite
C. 0
D. 4
Answer : B

27. A timer in a race is at the finish line. He should start his stop watch
A. as soon as he hears the report of the gun
B. the moment he sees the flash
C. either (a) or (b) since that makes no difference
D. None of the above
Answer : B

28. Ultrasonic waves are used
A. in medical and surgical diagnosis
B. in testing the quality of the linings and pads used in vehicles and aircraft brakes
C. to clean surgical instruments, jewellery and similar articles
D. All the above
Answer : D

29. A sensitive instrument susceptible to magnetic infiuence can be protected from external magnetic field by
A. enclosing it in a thick walled iron box
B. wrapping it with an insulator
C. by placing it inside a glass case
D. by surrounding it with fine copper gauze
Answer : A

30. For detecting and, testing of small electric charges we use
A. an electrophorus
B. an electroscope
C. an electromagnet
D. an ammeter
Answer : B

31. 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

32. The Cact that the compass needle does not point true north was observed first by
A. Sir Isaac Newton
B. Columbus
C. Archimedes
D. Thomas Alva Edison
Answer : B

33. Which of the following revolves round the nucleus in an atom?
A. protons
B. electrons
C. neutrons
D. positrons
Answer : B

34. When temperature decreases, resistance of metals to flow of electricity
A. increases
B. decreases
C. neither increases nor decreases
D. first increases then decreases
Answer : B

35. 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

36. The first Indian Satellite launched from a Russian Cosmodrome on April 16, 1975 was named
A. Bhaskara
B. Insat I-A
C. Aryabhatta
D. SLV-l
Answer : C

37. 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

38. A star contains
A. about 75% of hydrogen
B. 22% helium
C. traces of most other elements including oxygen, neon, carbon and nitrogen
D. All the above
Answer : D

39. 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

40. On the Kelvin scale, the melting point of ice is
A. 0 K
B. 273 K
C. 373 K
D. 100 K
Answer : B

41. 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

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

43. The heat produced in a conductor due to the passage of a current through it is proportional to
A. the square of the current
B. the resistance of the conductor
C. the time for which the current flows
D. All the above
Answer : D

44. Mercury is used in a barometer because
A. its density being very high 13.6 g/cm3 the height of mercury column is conveniently small
B. at the ordinary temperature its vapour pressure is small
C. it is opaque and does not wet glass
D. All the above
Answer : D

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

46. The evaporation rate depends on
A. the nature of the liquid
B. area of the exposed surface of the liquid
C. temperature of air and of the liquid
D. All the above
Answer : D

47. Echoes are produced by
A. the reflection of sound waves
B. the refraction of sound waves
C. the interference of sound waves
D. reverberation of sound waves
Answer : A

48. Cosmic rays are
A. powerful X-rays falling on the earth from space
B. ultraviolet rays from the sun
C. gamma rays from radioactive minerals
D. very energetic radiation falling upon the earth from outer space consisting chiefly of charged particles
Answer : D

49. The earth's nearest neighbour in space is
A. the Sun
B. the Moon
C. the Venus
D. the Mars
Answer : B

50. The earth's nearest neighbour in space is
A. the Sun
B. the Moon
C. the Venus
D. the Mars
Answer : B