[MCQ]Physics MCQs For UPSC(NDA/NA) Exam, SET 9||DEB STUDY

PHYSICS OBJECTIVE Q&A FOR UPSC (NDA/NA) EXAM

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UPSC NDA/NA PHYSICS MCQ Q.1

How many sixty watt (60 W) bulbs may be safely used in a 240 V supply with 4 A fuse?

(a) 4
(b) 8
(c) 12
(d) 16



Ans.(d)

UPSC NDA/NA PHYSICS MCQ Q.2

If a light body and a heavy body have equal momentum , then

(a) the lighter body has greater kinetic energy than the heavier body 
(b) the lighter body has lesser kinetic energy than the heavier body 
(c) the kinetic energy of the lighter body is equal to the kinetic energy of the heavier body 
(d) the kinetic energy of both the bodies are independent of momentum


Ans.(a)

UPSC NDA/NA PHYSICS MCQ Q.3

When a mass m is hung on a spring, the spring stretched by 6 cm. If the loaded spring is pulled downward a little and released, then the period of vibration of the system will be

(a) 0.27 s
(b) 0.35 s
(c) 0.49 s
(d) 0.64 s


Ans.(c)

UPSC NDA/NA PHYSICS MCQ Q.4 

A book is kept on the surface of a table. If the gravitational pull of the Earth on the book is the force of action, then the force of reaction is exerted by

(a) the book on table
(b) the book on the earth
(c) the table on the book
(d) the table on the earth


Ans.(b)

UPSC NDA/NA PHYSICS MCQ Q.5

Kinetic viscosity of a given liquid is the ratio of the

(a) coefficient of viscosity to the density
(b) coefficient of viscosity to the surface tension
(c) density to the coefficient of viscosity
(d) surface tension to the coefficient of viscosity


Ans.(a)

UPSC NDA/NA PHYSICS MCQ Q.6

When oil floats on water, the surface tension of water

(a) vanishes immediately
(b) decreases considerably
(c) increases considerably
(d) remains unaffected


Ans.(d)

UPSC NDA/NA PHYSICS MCQ Q.7

Consider two hollow glass spheres, one containing water and the other containing mercury. Each liquid fills about one-tenth of the volume of the sphere. In zero gravity environment

(a) water and mercury float freely inside the sphere
(b) water forms a layer on the glass, while mercury floats
(c) mercury forms a layer on the glass, while water floats
(d) water and mercury both form a layer on the glass


Ans.(d)

UPSC NDA/NA PHYSICS MCQ Q.8

An object is kept 5 cm in front of a concave mirror  of focal length 15 cm. What will be the nature of the image?

(a) virtual, not magnified
(b) virtual, magnified
(c) real, not magnified
(d) real, magnified


Ans.(b)

UPSC NDA/NA PHYSICS MCQ Q.9

What is the telescope designed to search for earth-size planets in the nearby region of our galaxy, termed as?

(a) Hubble telescope
(b) Kepler telescope
(c) Copernicus telescope
(d) Newton telescope


Ans.(a)

UPSC NDA/NA PHYSICS MCQ Q.10

Net charge in a current-carrying conductor is

(a) always positive
(b) always negative
(c) zero
(d) either positive or negative


Ans.(c)



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