1000+ General Physics Multiple Choice Question Answer [Solved]

1. Photoelectric cell is a device which converts
A. light energy into electrical energy
B. electrical energy into light energy
C. magnetic energy into electrical energy
D. electrical energy into mechanical energy
Answer : A

2. Who discovered that the Cree Call acceleration Is the same for any object at a given place?
A. Newton
B. Pascal
C. Archimedes
D. Galileo
Answer : D

3. Which of the following pairs is not correct?
A. Television - Baird
B. Transistor ~ Shockley
C. Thermometer - Celsius
D. Barometer Torricelli
Answer : C

4. Among the following the most suitable material for the core of an electro-magnet is
A. steel
B. wood
C. soft iron
D. copper
Answer : C

5. The unit of power in SI is
A. Joule
B. Newton
C. Joule/Sec
D. Erg/Sec
Answer : C

6. A balloon ruled with hydrogen will
A. continue going upwards uninterrupted
B. reach a particular height and remain floating
C. burst after reaching some height
D. reach a particular height and start coming down
Answer : B

7. The radiator in a car serves to
A. cool the engine
B. heat up the engine
C. start the car
D. moderate the speed
Answer : A

8. The barometer was invented by
A. Michael Faraday
B. Torricelli
C. Thomas Alva Edison
D. Benjamin Franklin
Answer : B

9. A balloon ruled with hydrogen will
A. continue going upwards uninterrupted
B. reach a particular height and remain floating
C. burst after reaching some height
D. reach a particular height and start coming down
Answer : B

10. An ammeter has
A. a high resistance
B. a very low resistance
C. no resistance at all
D. resistance of 400 ? w
Answer : B

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

12. Heat transfer
A. cools the body that transfers it
B. heats the body that absorbs the heat
C. may change the physical state of the substance
D. All the above
Answer : D

13. Rays similar to X-rays but of smaller wave length that are given off by radioactive substances are
A. �± -rays
B. �² -rays
C. �³ -rays
D. Cosmic rays
Answer : C

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

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

16. A projectile is fired at an angle with the horizontal with a small velocity. Its horizontal range will be maximum when the angle with the horizontal is
A. 0°
B. 30°
C. 45°
D. 60°
Answer : C

17. The largest reserve of radioactive element which can be used in a nuclear reactor has been found in India, The name of the element is
A. Thorium
B. Uranium
C. Plutonium
D. Radium
Answer : A

18. When light travels from one medium to another there is a change in its
A. velocity
B. wavelength
C. frequency
D. Both (a) and (b) above
Answer : D

19. The acoustical quality of a room depends on
A. the size and shape of the room
B. the ability of the ceiling, walls and floor to exclude unwanted sound
C. the use of furnishings made of sound absorbing materials
D. All the above
Answer : D

20. The Milky Way is
A. the path of a star which is nearest to the earth
B. a galaxy which includes the sun
C. a star that is nearest to the earth
D. None of these
Answer : B

21. An integrated circuit is more advantageous than a conventional circuit because
A. they make the electric equipment more reliable and easier for servicing
B. a faulty part of a conventional circuit may be difficult to locate and repair
C. if a part of the integrated circuit fails the entire circuit is simply replaced
D. All the above
Answer : D

22. The device for tracking and locating the position of a moving object in space is called
A. Space ship
B. Lunar module
C. Radar
D. Rocket
Answer : C

23. Velocity of sound in high altitudes is low because at such a height
A. the temperature is low
B. there is no air
C. the pressure is low
D. All the above
Answer : A

24. The speed of sound in air at 0° C is approximately
A. 4 x 108 m/s
B. 1500 m/s
C. 330 m/s
D. 500 m/s
Answer : C

25. During thunder storm you are travelling in a car. To protect yourself from the lightning you will have to
A. remain in the car
B. get out of the car and lie flat in the ground
C. abandon the car and take shelter under a nearby tree
D. touch the nearest electric pole
Answer : A

26. When we tighten the string of a sitar or tanpura its pitch
A. remains the same
B. increases
C. decreases
D. None of the above
Answer : B

27. The planet that is known as earth's twin is
A. Mercury
B. Venus
C. Moon
D. Mars
Answer : B

28. 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

29. 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

30. No current will flow between two charged bodies if they have the same
A. resistance
B. charge
C. potential
D. charge/potential ratio
Answer : C

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

32. A bolometer is used to measure
A. the quantity of heat energy in a body
B. thermal radiations quantitatively
C. high temperature
D. the intensity of sound
Answer : B

33. The enormous energy released in nuclear and thermonuclear reactions is due to conversion of
A. chemical energy into heat energy
B. mechanical energy into heat energy
C. protons into neutrons
D. mass into energy according to Einstein's equation
Answer : D

34. Powder clings to the skin because of
A. cohesion
B. adhesion
C. capillary action
D. absorption
Answer : B

35. The motion .of the pendulum of a wall clock is an example of
A. linear motion
B. vibratory motion
C. rotational motion
D. None of the above
Answer : B

36. The mass number and the atomic number of an element are X and Y respectively. The number oC neutrons in the atom of that element is
A. X
B. Y
C. X + Y
D. X Y
Answer : D

37. Besides protons, the nucleus of an atom contains
A. electrons
B. neutrons
C. neutrons and electrons
D. electrons, neutrons and other particles
Answer : B

38. Sun spots are
A. the mountains found on the surface of the Sun
B. the dark patches on the sun having less temperature than the normal sun's surface
C. ionized gas found near the solar surface
D. the magnetic storms on the surface of the Sun
Answer : B

39. The heat generated in a conductor carrying current is proportional to
A. the resistance
B. the square of the current flowing through it
C. the time the current flows
D. All the above
Answer : D

40. In the fuse of an electrical installation blows out
A. replace the fuse by a thin wire
B. replace the fuse by a thick copper wire
C. replace the fuse by a fuse wire of proper rating
D. replace the fuse by nichrome wire
Answer : C

41. Mica is used in an electric iron because it is a
A. good conductor of heat
B. good conductor of electricity
C. bad conductor of electricity
D. Both (a) and (b) above
Answer : C

42. At what temperature do the Fahrenheit and Celsius scales give the same reading?
A. 212°
B. 32°
C. -40°
D. 0°
Answer : C

43. The distance between two bodies is halved. Now the force of attraction between them will be
A. half
B. one fourth
C. four times
D. two times
Answer : C

44. Out of the following which is an insulator?
A. Silver
B. Copper
C. Nichrome
D. Dry wood
Answer : D

45. Which part of the eye photographic camera?
A. Lens
B. Iris
C. Retina
D. Eyelid
Answer : D

46. Among the following the most suitable material for the core of an electro-magnet is
A. steel
B. wood
C. soft iron
D. copper
Answer : C

47. At what temperature do the Fahrenheit and Kelvin scales give the same reading?
A. 212°
B. 32°
C. -40°
D. 0°
Answer : D

48. 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

49. The inability of a body to change its state of rest or uniform motion along a straight line is called its
A. momentum
B. velocity
C. acceleration
D. inertia
Answer : D

50. Enriched uranium means
A. Uranium that is very pure
B. Uranium in which the concentration of the isotope U-238 is more than in the naturally occuring uranium
C. Uranium in which the concentration of the isotope U-235 is more than in the naturally occuring uranium
D. None of the above
Answer : C