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1000+ General Physics MCQ for SSC GD [Solved]

Thursday 9th of March 2023

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1. The speed at which light travels in vacuum is
A. 3 x 107 ms-1
B. 5 x 108 ms-1
C. 3 x 104 kms-1
D. 3 x 108 ms-1
Answer : D
2. The property of a fluid by which it resists relative motion within itself is known as
A. cohesive force
B. surface tension
C. diffusion
D. viscosity
Answer : D
3. When a bullet is fired from a gun
A. the gun moves forward
B. the gun jumps up
C. the gun does not move
D. the gun recoils with the same momentum as the bullet
Answer : D
4. The rate of cooling of a hot body depends on
A. the nature of the radiating surface
B. area of the radiating surface
C. temperature difference between the body and the surroundings
D. All the above
Answer : D
5. A hunter on the ground wishes to shoot a bird on a tree at a distance with his rifle. He has to point the rifle
A. at the lower elevation than the bird
B. at a higher elevation than the bird
C. in the same direction as the bird
D. vertically upwards
Answer : B
6. For viewing objects placed at a higher level from a position at a lower level, the instrument used' Is known aa
A. telescope
B. spectrometer
C. microscope
D. periscope
Answer : D
7. 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
8. 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
9. The resistance of a wire depends on
A. the material of the wire
B. the length of the wire
C. the cross section of the wire
D. All the above
Answer : D
10. The focal length or lens or the eye is under the control or the
A. iris
B. pupil
C. ciliary body
D. cornea
Answer : C
11. The brightest planet in the Solar System is
A. Jupiter
B. Mercury
C. Venus
D. Sirius
Answer : C
12. 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
13. At temperature near OK, (zero kelvin) metals such as lead and tin become
A. insulators
B. semiconductors
C. superconductors
D. condenser
Answer : C
14. 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
15. Photocells are used
A. in burglar alarms
B. in automotive devices for light switches
C. television cameras
D. All the above
Answer : D
16. X-rays are used
A. in hospital in the treatment of malignant growth
B. to reveal hidden flaws in metal castings and welded joints
C. to detect alterations made in works of art
D. All the above
Answer : D
17. It is difficult to bon potatoes at the top or a mountain because
A. the water available is hard
B. it is colder than at sea level
C. the potatoes become hard
D. the boiling point of water is lower at that height on account of low atmospheric pressure
Answer : D
18. An electric fan converts
A. electrical energy into heat energy
B. electrical energy into mechanical energy
C. mechanical energy into electrical energy
D. mechanical energy into heat energy
Answer : B
19. 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
20. Choose the correct answer
A. Microphone converts sound energy into electrical energy.
B. Electric fan converts electrical energy into mechanical energy.
C. Battery converts chemical energy into electrical energy.
D. All the above
Answer : D
21. The device used to record the sound is
A. a microphone
B. a headphone
C. a phonograph
D. an amplifier
Answer : C
22. The speed of sound in air at 0° C is approximately
A. 4 x 10 8 m/s
B. 1500 m/s
C. 330 m/s
D. 500 m/s
Answer : C
23. The ozone layer absorbs
A. Cosmic rays
B. Infrared rays
C. All radiations of light
D. Ultra violet rays coming from the sun
Answer : D
24. 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
25. 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
26. 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
27. When sound waves travel from one medium to another, the quantity which remains unchanged is its
A. speed
B. frequency
C. wavelength
D. All the above
Answer : B
28. A man Jumping out of a moving train is thrown
A. forward
B. backward
C. sideways
D. None of the above
Answer : A
29. We see the sun before it actually rises on the horizon. This is due to
A. refraction
B. reflection
C. total internal reflection
D. parallax
Answer : A
30. Credit for starting Space Science Research in India goes to
A. HJ Bhabha
B. SS Bhatnagar
C. V Sarabhai
D. CV Raman
Answer : C
31. The earth's nearest neighbour in space is
A. the Sun
B. the Moon
C. the Venus
D. the Mars
Answer : B
32. A body has fallen from a height. Just before touching the pound it has
A. lost all its potential energy and gained an equivalent amount of kinetic energy
B. gained potential energy and lost kinetic energy
C. gained kinetic energy as well as potential energy
D. lost kinetic energy as well as potential energy
Answer : A
33. 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
34. A light year means
A. a unit of time
B. a unit of length
C. a year of no consequence
D. illumination throughout the year
Answer : B
35. One can be recognised by his voice alone due to the factor of
A. quality
B. amplitude
C. pitch
D. loudness
Answer : A
36. Which of the following is fissionable?
A. U-234
B. U-235
C. U-238
D. Both (b) and (c)
Answer : B
37. To produce beats it is necessary to have two waves
A. travelling in opposite direction
B. of slightly different frequencies
C. of equal wavelength
D. of equal amplitude
Answer : B
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. The radius of an atom is approximately
A. 10-10 cm
B. 10-12 cm
C. 10-13 cm
D. 10-16 cm
Answer : A
40. A hunter on the ground wishes to shoot a bird on a tree at a distance with his rifle. He has to point the rifle
A. at the lower elevation than the bird
B. at a higher elevation than the bird
C. in the same direction as the bird
D. vertically upwards
Answer : B
41. 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
42. 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
43. When ice melts, Its volume
A. decreases
B. increases
C. remains the same until all the ice has melted and then increases
D. remains the same
Answer : A
44. For viewing objects placed at a higher level from a position at a lower level, the instrument used' Is known aa
A. telescope
B. spectrometer
C. microscope
D. periscope
Answer : D
45. The Solar System lies near the edge of a galaxy known as
A. The Milky Way
B. Radio Galaxy
C. Andromeda Nebula
D. Magellanic Clouds
Answer : A
46. The attraction of unlike molecules at the common surface is known as
A. adhesion
B. cohesion
C. surface tension
D. capillarity
Answer : A
47. The instrument used to measure atmospheric pressure is
A. Pyrometer
B. Eudiometer
C. Barometer
D. Hydrometer
Answer : C
48. Of the following which has got the highest frequency?
A. ultraviolet rays
B. gamma rays
C. radio waves
D. infrared waves
Answer : B
49. The colour or an opaque object is due to the colour it
A. absorbs
B. refracts
C. reflects
D. scatters
Answer : C
50. 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

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