General Physics MCQ Solved Paper for IBPS SO

1. 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

2. A transformer
A. converts direct current into alternating current
B. converts alternating current into direct current
C. steps up or steps down a given alternating current voltage
D. supplies current with zero resistance
Answer : C

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

4. Photocells are used
A. in burglar alarms
B. in automotive devices for light switches
C. television cameras
D. All the above
Answer : D

5. The freezer in a refrigerator is placed near the top
A. to keep it away from the hot compressor which is near the bottom
B. because of convenience
C. so that it can cool the whole interior by setting up convection currents
D. to prevent too much cooling
Answer : C

6. The planet that moves fastest around the sun is
A. Mars
B. Venus
C. Earth
D. Mercury
Answer : D

7. 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

8. Photo-electric cells convert
A. electrical energy into light energy
B. light energy into electrical energy
C. light energy into heat energy
D. electrical energy into heat energy
Answer : B

9. In very cold countries alcohol is used as a thermometric liquid because
A. alcohol is a poor conductor of heat
B. alcohol can be coloured for its level to be seen easily
C. its freezing point is very low
D. it will not stick to the glass tube
Answer : C

10. 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

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

12. Increase in pressure
A. increases the melting point of ice
B. decreases the melting point of ice
C. has no effect on the melting point of ice
D. increases the volume of the ice
Answer : B

13. Bats flying in the dark avoid obstacles because
A. they can see very dearly only in darkness
B. they produce ultrasonic waves which guide them
C. their eyes are sensitive to darkness
D. their eye holes expand in darkness
Answer : B

14. 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

15. A person does not sink in the Dead Sea because
A. the sea contains a large amount of other salts besides sodium chloride
B. the density of the person is less than the density of the Dead Sea water
C. of the surface tension due to salt water in the Dead Sea
D. of difference in mass
Answer : B

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

17. The rocket engine is motivated by jet propulsion which uses the famous
A. Kepler's Laws
B. Newtonian Third Law of Motion
C. Bernoulli's Principle
D. Law of Relativity
Answer : B

18. A man stands in a lift which accelerates upwards. The resultant reaction force on the floor of the lift is
A. greater than the weight of the man
B. less than the weight of the man
C. same as the weight of the man
D. zero
Answer : A

19. 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

20. 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

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

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

23. 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

24. 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

25. Railway tracks are banked on curves so that
A. the necessary centrifugal force may be obtained from the horizontal component of the weight of the train
B. the frictional force between the track and the wheels is avoided
C. the necessary centripetal force may be derived from the horizontal component of the weight of the train
D. None of these
Answer : C

26. 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

27. Alternating Current (AC) is more advantageous than direct current because
A. it can be transmitted easily and efficiently
B. Alternating Current (AC) loses the least amount of energy when transmitted at high voltages
C. Alternating Current (AC) voltage can be easily increased or decreased
D. all the above
Answer : D

28. In a microphone
A. sound energy is converted into electrical energy
B. electrical energy is converted into sound energy
C. sound energy is converted into mechanical energy
D. mechanical energy is converted into sound energy
Answer : A

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

30. 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

31. 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

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

33. 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

34. A wire conveying a current deflects a pivoted magnetic needle. This was discovered by
A. Marconi
B. Oersted
C. Faraday
D. Ohm
Answer : B

35. A rod of brass la 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

36. The speed of light is minimum while passing through
A. air
B. glass
C. vacuum
D. water
Answer : B

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

38. The brightest planet in the Solar System is
A. Jupiter
B. Mercury
C. Venus
D. Sirius
Answer : C

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

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

41. When a ship floats on water, the weight or water displaced is
A. an indeterminate quantity
B. equal to the weight of the ship
C. greater than the weight of the ship
D. less than the weight of the ship
Answer : B

42. 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

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

44. Of the following types of electromagnetic radiation which has the longest wavelength?
A. ultraviolet rays
B. gamma rays
C. radio waves
D. infrared waves
Answer : C

45. Body A is kept in contact with body B. Heat will flow from A to B if
A. the heat content of A is greater than that of B
B. the temperature of A is greater than that of B
C. the specific heat of A is greater than that of B
D. the specific heat of B is greater than that of A
Answer : B

46. The following are the atmospheric zones above the surface of the earth:
A) Troposphere
B) Ionosphere
C) Stratosphere
D) Exosphere
Select the correct sequence from the earth's surface on the basis of the codes given below:
A. ACBD
B. ABCD
C. CABD
D. BACD
Answer : A

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

48. 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

49. A spherical mirror is
A. a reflecting elliptical portion
B. a reflecting spherical surface
C. a parabolic reflecting surface
D. a flat reflecting surface
Answer : B

50. A stone floor feels cold to the bare feet but a carpet on the same floor feels warm. This is because
A. the floor and carpet are at different temperatures
B. the stone conveys the heat away from the feet more rapidly than the carpet
C. the carpet is a better conductor of heat than the stone
D. the human body maintains a constant temperature
Answer : B