1000+ General Physics MCQ for ESIC [Solved]

1. Which of the following sets of elementary particles have nearly equal masses?
A. Neutron and Proton
B. Electron and Proton
C. Neutron and Electron
D. Proton, Neutron and Electron
Answer : A

2. When a body Is taken to the poles from the equator, Its weight becomes
A. greater
B. less
C. the same
D. None of these
Answer : A

3. 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

4. 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

5. Electromagnets are used in
A. the telephone ear piece
B. the telegraph
C. the electric bell
D. All the above
Answer : D

6. The frequency of an ultrasonic wave is
A. the same as that of an audible sound
B. above the audible range
C. below the audible range
D. None of the above
Answer : B

7. The source of electric energy in an artificial satellite is
A. mininuclear reactor
B. a dynamo
C. a thermopile
D. solar cells
Answer : D

8. 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

9. 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

10. Lightning conductors are made of
A. iron
B. chromium
C. copper
D. steel
Answer : C

11. The escape velocity of a satellite projected from the surface of the earth is independent of
A. the mass of earth
B. the mass of the satellite
C. the radius of the earth
D. gravitation of the earth
Answer : B

12. If the speed of the rotation of the earth increases the weight of a body
A. will increase
B. will decrease
C. will have no change
D. will either increase or decrease
Answer : B

13. The attraction between similar molecules is called
A. inertia
B. adhesion
C. cohesion
D. friction
Answer : C

14. The function of a ruse wire is
A. to stabilise the voltage
B. to decrease the current supply
C. to increase the current supply
D. to prevent an unduly high current from passing through a circuit
Answer : D

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

16. The power of a lens is
A. equal to its focal length
B. equal to its radius of curvature
C. equal to the reciprocal of its focal length (in metres)
D. equal to twice its focal length
Answer : C

17. 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

18. Why is nuclear fusion also known as thermonuclear reaction?
A. Fusion converts nuclear energy into heat
B. Fusion demands conditions of extremely high temperature to produce it
C. Fusion produces large amount of heat
D. Fusion reactions takes place in the sun
Answer : B

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

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

21. 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

22. 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

23. The end product in the uranium disintegration series is
A. lead
B. zinc
C. carbon
D. tin
Answer : A

24. 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

25. A ship sailing from a river to the sea
A. sinks less in the sea
B. sinks more in the sea
C. neither sinks more nor less in the sea
D. sinking more or less depends on sea
Answer : A

26. When a body is partly or wholly immersed in a liquid the apparent loss of weight is equal to the weight of the liquid displaced by the submerged portion. This is known as
A. Pascal's law
B. Bernoulli's law
C. Archimedes' law
D. Boyle's law
Answer : C

27. The aneroid barometer uses
A. mercury
B. distilled water
C. alcohol
D. does not use any liquid
Answer : D

28. In a hydraulic pressure
A. force on each square centimetre of the small piston is less than the force on each square centimetre of the large piston
B. the distance the small piston moves is equal to the distance the large piston moves
C. applied pressure is equally transmitted throughout the liquid in all directions
D. force acting on small piston is equal to the force acting on large piston
Answer : C

29. A man Jumping out of a moving train is thrown
A. forward
B. backward
C. sideways
D. None of the above
Answer : A

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

31. 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

32. In a river, the currents are fastest where the river la
A. wide and shallow
B. narrow and shallow
C. wide and deep
D. narrow and deep
Answer : B

33. Solids have definite shapes. This is because
A. the forces of cohesion of the molecules within are very much less in them
B. the forces of cohesion are very large
C. the forces of adhesion are large
D. the forces of adhesion are less
Answer : B

34. 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

35. A man weighing 50 kg floats on water in a lake. His apparent weight is
A. 50 kg
B. 45 kg
C. zero
D. 150 kg
Answer : C

36. 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

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

38. 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

39. Pieces of camphor placed on water move about rapidly. This is because of
A. diffusion
B. viscosity
C. surface tension
D. capillarity
Answer : C

40. 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

41. Light from the sun reaches the earth in
A. 2 minutes
B. 4 minutes
C. 12 minutes
D. 8 minutes
Answer : D

42. If an empty cylinder Is half ruled with a liquid, Its centre of gravity is
A. shifted upwards
B. shifted downwards
C. shifted neither upward nor downward
D. shifted upward or downward depending on the density of the liquid
Answer : B

43. 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

44. When a swing is drawn to a side Its potential energy In relation to the earth
A. increases
B. decreases
C. remains the same
D. is constant
Answer : A

45. When water is cooled from 4�C to 2�C its density
A. increases
B. decreases
C. remains the same
D. first increases then decreases
Answer : B

46. 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

47. A car parked in the sun with its windows closed gets terribly hot inside. This is due to
A. the heat emitted by the engine
B. the greenhouse effect
C. the good conducting power of the metal body
D. the double layered wind shield
Answer : B

48. Antiparticle of electron is
A. proton
B. antiproton
C. positron
D. neutron
Answer : C

49. A cyclist leans inwards when he is negotiating a curve 10 that
A. he may increase his speed
B. his weight may be reduced
C. necessary centripetal force may be available from the horizontal component of the normal reaction due to the track to maintain the curved motion
D. no frictional force may be produced between the wheels and the axle
Answer : C

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