IBPS RRB - General Physics 1000+ MCQ [Solved] PDF Download

1. Out of the following, name the fluorescent substance.
A. quinine sulphate solution
B. paraffin oil
C. fluorescein solutions
D. All the above
Answer : D

2. 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

3. A boat loaded with rocks floats in the middle of a swimming pool. A man in the boat throws the rocks overboard. The level of water in the pool will
A. increase
B. decrease
C. remain the same
D. first decrease and then increase
Answer : B

4. Holography is the technique of
A. taking photos of various objects
B. recording and reproducing three dimensional images
C. tracing out planets and stars in the sky
D. transmitting light waves
Answer : B

5. 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

6. 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

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

8. The earth satellite Aryabhatta was put in orbit by India on
A. October 20, 1978
B. November 14, 1978
C. January 26, 1979
D. April 19, 1975
Answer : D

9. The heating element often used in an electric iron is
A. copper
B. tungsten
C. mica
D. nichrome
Answer : D

10. The fact that two large ships travelling on close parallel courses in the same direction tend to move towards each other can be explained by
A. Bernoulli's principle
B. Magnetic properties of the ship's material
C. Newton's third law of motion
D. Earth's gravitational force
Answer : A

11. 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

12. The image formed by a plane mirror is
A. of the same size as the object
B. at the same distance behind the mirror as the object is in front of it
C. virtual and laterally inverted
D. All the above
Answer : D

13. When an electric apparatus is fitted with a three core flexible lead the insulation on the three wires is distinctively coloured. The present international convention is
A. brown for earth, yellow for live, light blue for neutral
B. green for earth, yellow for live, brown for neutral
C. yellow for earth, green for live, brown for neutral
D. brown or red for live, light blue or black for neutral and green or yellow for earth
Answer : D

14. 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

15. In hot climatic conditions, the buildings are painted white because
A. white paint is economical
B. it does not fade off
C. it does not crack with higher temperature
D. white coating is a bad conductor of heat and reflects heat rays that fall on it, thus keeping the inside cool
Answer : D

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

17. 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

18. 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

19. 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

20. The brightest star visible to the naked eye is
A. Sirius
B. Vega
C. Rigel
D. Proxima Centauri
Answer : A

21. In the visible spectrum which colour has the shortest wavelength?
A. Red
B. Blue
C. Yellow
D. Violet
Answer : D

22. An electric charge is measured in
A. coulomb
B. ampere
C. volt
D. watt
Answer : A

23. 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

24. In an oil lamp, holes are provided below the chimney so that
A. necessary oxygen for burning of oil may be provided
B. the convection current of air may be maintained to keep the lamp burning
C. the brightness of the lamp may be increased
D. All the above
Answer : D

25. If a body weight 12N on the surface of the earth, how much will it weigh on the surface of the moon where acceleration due to gravity is only one-sixth of that on earth's surface?
A. 12N
B. 2N
C. 10N
D. 6N
Answer : B

26. The tiniest of the stars belong to the group known as
A. Giant stars
B. White Dwarf stars
C. Neutron stars
D. Super-giant stars
Answer : C

27. The stem of a vibrating tuning fork is pressed against a sound box. Then
A. the loudness of the sound increases
B. the loudness remains the same
C. the loudness decreases
D. the sound suddenly stops
Answer : A

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

29. The extremely luminous objects located at the centre of some distant galaxies and which are sources of high energy electromagnetic radiation are known as
A. Nebulae
B. Quasars
C. Meteors
D. Comets
Answer : B

30. 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

31. 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

32. The scientist who first sent electromagnetic waves to distant places was
A. James Clerk Maxwell
B. Heinrich Hertz
C. Thomas Alva Edison
D. Baird
Answer : C

33. A cup of hot coffee is placed on a metal table in a room. By which of the following methods does it lose heat?
A. conduction and convection only
B. conduction and radiation only
C. convection and radiation only
D. conduction, convection and radiation
Answer : D

34. A person cups his hand around the mouth when shouting. Why?
A. Sound energy from his mouth is then directed in one direction
B. The cupped hand acts as a cardboard tube of short length
C. The pitch of sound increases
D. Both (a) and (b)
Answer : D

35. Commonly used safety fuse wire is made of
A. Tin
B. Lead
C. Nickel
D. An alloy of tin and lead
Answer : D

36. Where does the centre of gravity of a rubber ring lie?
A. on the outer surface
B. in the inner surface
C. at the centre of the ring
D. None of the above
Answer : C

37. 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

38. The colour of a star is an indication of its
A. distance from the earth
B. age
C. temperature
D. size
Answer : C

39. 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

40. 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

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

42. The speed of sound in a medium depends upon the properties of the medium such as
A. its density
B. its temperature
C. its elasticity
D. All the above
Answer : D

43. Sound waves In 'air travel faster if
A. frequency is higher
B. wavelength is smaller
C. pitch is smaller
D. air is warmer
Answer : D

44. The difference between planets and stars is
A. planets do not have light of their own whereas stars shine by their own light
B. planets do not twinkle like stars
C. planets are much smaller than stars
D. All the above
Answer : D

45. The number of electrons in the outer orbits of a nucleus gives
A. the mass number
B. atomic number
C. atomic weight
D. absolute number
Answer : B

46. The filament lamp is an example for
A. fluorescence
B. incandescence
C. both (a) and (b)
D. None of these
Answer : B

47. 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

48. 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

49. Fish and other aquatic creatures can live inside a deep frozen pond because
A. fish are cold-blooded animals
B. ice is a bad conductor of heat
C. there will always be water just beneath the ice level
D. they can adapt themselves to live in ice
Answer : C

50. 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