Solved MCQs of Physics for NTS, PPSC, CSS, FPSC, PMS, OTS and PTS

Solved MCQs of Physics for NTS, PPSC, CSS, FPSC, PMS, OTS and PTS Online Test Preparation

This post Contains Solved MCQs of Physics for NTS, PPSC, CSS, FPSC, PMS, OTS and PTS online test preparation. This is the 1st post of Physics MCQs series. These Physics Multiple Choice Questions and Answers are here for practice for those who are looking for online entry test or job test preparation. MCQs are taken from Caravan Comprehensive GK Book. You can also Check some more MCQs of Physics Here.

Physics Multiple Choice Questions and Answers

1. What are primary colours?

(a) Colour of the rainbow
(b) Colour in the spectrum of white light
(c) Colours which cannot be produced
(d) Colour found in nature
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2. Air bubble in water shines because of the phenomenon of ______.

(a) Dispersion
(b) Refraction
(c) Diffraction
(d) Total internal reflection
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3. Sun and the other stars are virtually huge nuclear explosion chambers producing a large amount of heat and light. Yet, we do not hear any of the explosions because of _____________.

(a) Heat and light are electromagnetic radiations and travel much faster than sound
(b) Sound waves get attenuated completely before they reach the earth
(c) The process involved in the interior of the sun and the stars relate to atomic and subatomic particles and not molecules and their vibrations
(d) The outer space is an absolute vacuum
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4. The advantage of AC over DC is that _______.

(a) it contains more electrical energy
(b) It is free from voltage fluctuations
(c) Its generation costs much less
(d) it can be transmitted over long distances with minimum power loss
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5. What is minimum escape velocity–the speed necessary to counter earth’s gravity and to break away from earth into outer space–required for a rocket to be launched into space?

(a) 5 km per second
(b) 6 km per second
(c) 11 km per second
(d) 20 km per second
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6. Which of the following devices is used to step up or step down the voltage of alternating current?

(a) Induction coil
(b) Transformer
(c) Transistor
(d) Rectifier
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7. The spherical shape of a small drop of rain is due to ______.

(a) Viscosity
(b) Surface tension
(c) Atmospheric pressure
(d) Gravity
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8. The blue colour of the sky can be attributed to ______.

(a) Differential scattering of sunlight by the atmosphere
(b) Total internal reflection of the sunlight by the atmosphere
(c) Absorption of sunlight
(d) Refraction of sunlight by the atmosphere
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9. Which one of the following sets of properties are relevant for an electrical fuse wire needed for a normal application?

(a) Thick wire, high melting point alloy, short length
(b) Thick wire, low melting point alloy, large length
(c) Short length, low melting point alloy, thin wire
(d) Large length, low melting point alloy, thin wire
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10. Ice floats on water because the density of ice is less than that of water, Out of the following what part of giant icebergs remains above water?

(a) 1/10
(b) 1/4
(c) 1/2
(d) 3/4
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11. Which one of the following colours has the longest wavelength?

(a) Green
(b) Yellow
(c) Blue
(d) Red
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12. Which one of the following can be used to focus sunlight?

(a) Plane mirror
(b) Concave lens
(c) Concave mirror
(d) Convex mirror
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13. Which of the following is a good conductor of electricity?

(a) PVC
(b) Glass
(c) Rubber
(d) Graphite
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14. The tendency of a liquid drop to contract and occupy minimum area is due to______.

(a) Surface tension
(b) Viscosity
(c) Density
(d) Vapour pressure
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15. Choke coil is a coil of __________.

(a) High resistance and high inductance
(b) Low resistance and high inductance
(c) High resistance and low inductance
(d) Low resistance and low inductance
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16. Conductors. insulators and semi-conductors differ from each other due to the property of _________.

(a) ability of the current they carry
(b) formation of crystal lattice
(c) binding energy of their electrons
(d) mutual width of their energy gaps
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17. On which principle does the tape-recorder function?

(a) Electromagnetic induction
(b) Electro valency
(c) Gay Lussac’s law of combining volumes
(d) Boyle’s Law
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18. When a constant force is applied to a body it moves with uniform _________.

(a) Momentum
(b) Velocity
(c) Speed
(d) Acceleration
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19. The silvered surface of thermos flask prevents the transfer of heat by ______.

(a) Conduction
(b) Convection
(c) Reflection
(d) Radiation
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20. When the wind blows at high velocity, rooftops are blown off because of pressure_________.

(a) Outside is more than inside the roof
(b) Inside is more than outside the roof
(c) Increase due to wind velocity
(d) Is exerted by air from outside
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