Physics MCQs For UPSC(NDA/NA) Exam
UPSC NDA/NA PHYSICS MCQ Q.1
The mirror used for the head light of a car is
(A)spherical concave
(B)plane
(C)cylindrical
(D)parabolic concave
Ans.(D)
UPSC NDA/NA PHYSICS MCQ Q.2
An iron ball and a wooden ball of the same radius are released from a height H in vacuum. The time taken to reach the ground will be
(A)more for the iron ball
(B)more for the wooden ball
(C)equal for both
(D)in the ratio of their weights
Ans.(C)
UPSC NDA/NA PHYSICS MCQ Q.3
A body weights 5 kg on equator. At the poles ,it is likely to weight
(A)5 kg
(B)less than 5 kg but not zero
(C)0 kg
(D)more than 5 kg
Ans.(D)
UPSC NDA/NA PHYSICS MCQ Q.4
The polarity of an unmarked horse shoe magnet can be determined by using
(A)a charged glass rod
(B)a magnetic compass
(C)an electroscope
(D)another unmarked bar magnet
Ans.(B)
UPSC NDA/NA PHYSICS MCQ Q.5
For a steel boat floating on a lake, the weight of the water displaced by the boat is
(A)less than the weight of the boat
(B)more than the weight of the boat
(C)equal to the weight of the boat which is below the water level of the lake
(D)equal to the weight of the boat
Ans.(C)
UPSC NDA/NA PHYSICS MCQ Q.6
Consider the following statements
1. If a piece of bar magnet is broken into two equally long pieces, the pieces will not lose the magnetic properties.
2. Magnetic properties of a substance lie in the atomic level.
Which of the statement(s) given above is/are correct?
(A)only 1
(B)only 2
(C)both 1 and 2
(D)neither 1 nor 2
Ans.(C)
UPSC NDA/NA PHYSICS MCQ Q.7
When a solid object is immersed in water, there is a loss in its weight. The loss is
(A)equal to the weight of the water
(B)less than the weight of the water displaced
(C)greater than the weight of the water displaced
(D)not related to the weight of the water displaced
Ans.(A)
UPSC NDA/NA PHYSICS MCQ Q.8
Body A of mass 2 kg and another body B of mass 4 kg of same material are kept in the same sunshine for some time interval. If the rise in temperature is equal for both the bodies, then which one among the following in this regard is correct?
(A)heat absorbed by B is double because its mass is double
(B)heat absorbed by A is double because its mass is equal
(C)heat absorbed by both A and B is equal because the quantity of heat absorbed does not depend upon mass
(D)heat absorbed by B is four times than the heat absorbed by A because the quantity of heat absorbed is proportional to square of the mass
Ans.(A)
UPSC NDA/NA PHYSICS MCQ Q.9
The main power supply in India is at 220 V, whereas that in the US is at 110 V. Which one among the following statements in this regard is correct?
(A) 110 V is safe but more expensive to maintain
(B) 110V is safer and cheaper to maintain
(C) 110 V leads to lower power loss
(D) 110 V works better at higher latitudes
Ans.(c)
UPSC NDA/NA PHYSICS MCQ Q.10
A refracting telescope consists of
(A) one concave mirror and one convex lens
(B) two convex lenses of equal focal length
(C) two concave mirrors of different focal lengths
(D) two convex lenses of unequal focal lengths
Ans.(D)
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