[MCQ]Physics MCQs For UPSC(NDA/NA) Exam, SET 22||DEB STUDY

Physics MCQs For UPSC(NDA/NA) Exam

UPSC NDA/NA PHYSICS MCQ Q.1

A long jumper runs before jumping because the he

(a) covers a greater distance

(b) maintains momentum conservation

(c) gains energy by running

(d) gains momentum

Ans.(b)

UPSC NDA/NA PHYSICS MCQ Q.2

Which among the following is the necessary condition for simple harmonic motion?

(a) Constant period

(b) Constant acceleration 

(c) Displacement and acceleration are proportional

(d) Displacement and torque are proportional 

Ans.(c)

UPSC NDA/NA PHYSICS MCQ Q.3

Consider the following four particles

1. Alpha particle

2. Proton

3. Electron

4. Neutron

Which of the following is the correct sequence in which their rest-masses increase?

(a) 3, 4, 2, 1

(b) 4, 2, 3, 1

(c) 3, 2, 4, 1

(d) 2, 3, 1, 4

Ans.(c)

UPSC NDA/NA PHYSICS MCQ Q.4

If an alpha particle is projected normally through a uniform magnetic field, then the path of the alpha particle inside the field will be

(a) circular 

(b) parabolic

(c) elliptic

(d) a straight line

Ans.(b)

UPSC NDA/NA PHYSICS MCQ Q.5

How far must a girl stand in front of a concave spherical mirror of radius 120 cm to see an erect image of her face four times its natural size?

(a) 40 cm from the mirror

(b) 45 cm from the mirror

(c) 50 cm from the mirror

(d) 55 cm from the mirror

Ans.(b)

UPSC NDA/NA PHYSICS MCQ Q.6

A sonometer wire having a length of 50 cm is vibrating in the fundamental mode with a frequency of 100 Hz. Which of the following is the type of propagating wave and its speed?

(a) Longitudinal, 50 m/s

(b) Transverse, 50 m/s

(c) Longitudinal, 100 m/s

(d) Transverse, 100 m/s

Ans.(d)

UPSC NDA/NA PHYSICS MCQ Q.7

Which one of the following is the amount of heat given up when 20 g of stream at 100 degree C is condensed and cooled to 20 degree C?

(a) 10000 cal

(b) 11400 cal

(c) 12400 cal

(d) 13600 cal

Ans.(c)

UPSC NDA/NA PHYSICS MCQ Q.8

What is the correct sequence in which the lengths of the following units increase?

1. Angstrom 

2. Micron

3. Nanometer

Select the correct Answer using the codes given below

(a) 1, 2, 3

(b) 3, 1, 2

(c) 1, 3, 2

(d) 2, 3, 1

Ans.(c)

UPSC NDA/NA PHYSICS MCQ Q.9

Which one of the following is the unit of activity of a radioactive source?

(a) Lux

(b) Becquerel

(c) Tesla

(d) Siemens

Ans.(b)

UPSC NDA/NA PHYSICS MCQ Q.10

Flow velocities in an incompressible flute can be measured with which one of the following ?

(a) Barometer

(b) Venturi meter

(c) Strain gauge

(d) Manometer

Ans.(b)

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⚡Physics MCQs For UPSC NDA/NA Exam⚡

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