[MCQ]Physics MCQs For UPSC(NDA/NA) Exam, SET 11||DEB STUDY

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

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UPSC NDA/NA PHYSICS MCQ Q.1

A pendulum clock is set to give correct time at the sea level. The clock is moved to a hill station at an altitude h above sea level. In order to keep correct time on the hill station which one of the following adjustments is required ?

(a) the length of the pendulum has to be reduced
(b) the length of the pendulum has to be increased
(c) the mass of the pendulum has to be increased
(d) the mass of the pendulum has to be reduced



Ans.(b)

UPSC NDA/NA PHYSICS MCQ Q.2

In which of the following cases Ohm's law is not valid?

(a) Wire bound resistor
(b) Potentiometer
(c) Junction diode
(d) electric bulb


Ans.(c)

UPSC NDA/NA PHYSICS MCQ Q.3

Which one of the following remains constant while throwing a ball upward?

(a) Displacement
(b) Kinetic energy
(c) Acceleration
(d) Velocity


Ans.(c)

UPSC NDA/NA PHYSICS MCQ Q.4

A proton and an electron having equal velocity are allowed to pass through a uniform magnetic field. Which one of the following statements is correct in this connection?

(a) the proton and the electron experience equal and opposite force
(b) the proton experiences greater force than does the electron
(c) the electron experiences more force than the proton
(d) no moving charged particle experiences a force in a magnetic field 


Ans.(a)

UPSC NDA/NA PHYSICS MCQ Q.5

A syringe is a hollow glass tube with lower end tapered to a nozzle. Due to which one of the following liquid can be drawn into a syringe?

(a) Partial vacuum produced inside the glass tube
(b) Diffusion
(c) Surface tension effect 
(d) Capillary action


Ans.(a)

UPSC NDA/NA PHYSICS MCQ  Q.6

Consider the following statements
If the net external torque acting on an object is switched off, then

1. Linear momentum will remain unchanged
2. Angular momentum will remain unchanged

Which of the statements given above is/are correct?

(a) only 1
(b) only 2
(c) both 1 and 2
(d) neither 1 nor 2


Ans.(b)

UPSC NDA/NA PHYSICS MCQ Q.7

Consider the following.

Heat produced in a conductor carrying current is independent of 

1. Current passing through it
2. Thermal conductivity
3. Specific resistance

Which of the statement(s) given above is/are correct?

(a) 1 and 3
(b) only 2
(c) 1 and 2
(d) 2 and 3


Ans.(b)

UPSC NDA/NA PHYSICS MCQ Q.8

In a sitar wire, which one of the following types of vibration is produced?

(a) progressive longitudinal
(b) stationary longitudinal
(c) progressive transverse
(d) stationary transverse


Ans.(c)

UPSC NDA/NA PHYSICS MCQ  Q.9

Consider the following statements

The principle of total internal reflection is applicable to explain the

1. Formation of image in desert
2. Formation of image in microscope
3. Colour of evening sky
4. Operation of optical fibres

Which of the statements given above are correct?

(a) 1 and 4
(b) 3 and 4
(c) 2 and 3
(d) 1 and 2


Ans.(a)

UPSC NDA/NA PHYSICS MCQ Q.10

Which of the following statements is/are true regarding a light wave travelling from air to glass?

1. Its frequency remains unchanged 
2. Its speed changes. 

Select the correct answer using the codes given below.

(a) only 1
(b) only 2
(c) both 1 and 2
(d) neither 1 nor 2


Ans.(b)

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