[MCQ]Physics MCQs For UPSC(NDA/NA) Exam, SET 3||DEB STUDY

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

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Set 3 Questions are Here....
For Set 2 Questions click Here

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UPSC NDA/NA PHYSICS MCQ Q.1.

For a simple pendulum, the graph between T^2 and L (Where , T is the time period and L is the length) is -



(a) straight line passing through origin.
(b) parabolic.
(c) circle.
(d) None of the above.


Ans. (a)

UPSC NDA/NA PHYSICS MCQ Q.2.

 When an electrical safety fuse is rated (marked) as 16 A, it means it -

(a) will not work if current is less than 16 A.
(b) has a resistance of 16 ohm.
(c) will work if the temperature is more than 16 degree celcius.
(d) will be blown (break) if current exceeds 16 A.


Ans.(d)

UPSC NDA/NA PHYSICS MCQ Q.3.

 Which one among the following is the correct order of power consumption for light of equal intensity -

(a) CFL tube < Fluorescent Tube < Incandesecent Bulb < Light Emitting Diode.
(b) Light emitting diode < CFL Tube < Fluorescent Tube < Incandescent Bulb.
(c) CFL tube < Fluorescent Tube < Light Emitting Diode < Incandescent Bulb.
(d) Incandescent Bulb < Light Emitting Diode < Fluorescent Tube < CFL Tube.


Ans .(b)

UPSC NDA/NA PHYSICS MCQ Q.4.

 One feels heavier in a lift when the lift -

(a) is going down steadily.
(b) just begins to go up.
(c) is moving up steadily.
(d) descends freely.


Ans.(b)

UPSC NDA/NA PHYSICS MCQ Q.5.

 A swinging pendulum has its maximum acceleration at -
 (a) the bottom of the swing.
 (b) the two extremities of the swing.
 (c) every point of the swing.
 (d) no particular portion of the pendulum.


Ans.(a)

UPSC NDA/NA PHYSICS MCQ Q.6.

Which one among the following statements about thermal conductivity is correct?

(A) steel>wood>water
(B) steel>water>wood
(C) water>steel>wood
(D) water>wood>steel

Ans. (B)

UPSC NDA/NA PHYSICS MCQ Q.7

In India,distribution of electricity for domestic purpose is done in the form of

(A)220V; 50Hz
(B)110V; 60Hz
(C)220V; 60 Hz
(D)110V; 50Hz


Ans.(A)

UPSC NDA/NA PHYSICS MCQ Q.8.

The earth's magnetic field is approximately
(A)1 Tesla
(B)2 Gauss
(C)10^4 Tesla
(D)1 Gauss


Ans.(D)

UPSC NDA/NA PHYSICS MCQ Q.9.

Yellow colour light is used as fog light because yellow colour

(A)light is most scattered by fog
(B)has the longest wavelength among all colours
(C)has the longest wavelength among all colours except red and orange,but the red colour is already used for brake light and stop light whereas orange colour is avoided due to its similarity with red
(D)has the shortest wavelength among all colours not already reserved for other purpose


Ans.(C)

UPSC NDA/NA PHYSICS MCQ Q.10

A hot object loses heat to its surroundings in the form of heat radiation. The rate of loss of heat depends on the

(A)temperature of the object
(B)temperature of the surroundings
(C)temperature difference between the object and its surroundings
(D)average temperature of the object and its surroundings


Ans.(C)

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For Set 4 Click Here

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