Wednesday, April 24, 2019

WBCS Polity and Constitution MCQs Prelims and Mains

WBCS Questions and Answers on General Science (Physics) P8


Physics - 08

36. In case of an ideal gas, Joule-Thomson effect is
(A) negative
(B) infinite
(C) zero
(D) positive.

Correct Answer: [C] zero.
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37. A ball is dropped from a given height. If its collision with the ground is fully elastic, it will reach a height
(A) More than before
(B) Less than before
(C) Height will not depend on an elasticity
(D) Same as before.

Correct Answer: [D] Same as before..
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38. Dentists use this mirror. Dentists use
(A) Concave Mirror
(B) Convex
(C) Special Mirror
(D) Plane Mirror.

Correct Answer: [A] Concave Mirror.
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39. What is stored in a storage cell?
(A) Lead or some other metal
(B) Chemical energy
(C) Electric charge
(D) Electric potential.

Correct Answer: [B] Chemical energy.
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40. The only vector quantity among the following is
(A) Electric field intensity
(B) Electric resistance
(C) Electric charges
(D) Electric potential.

Correct Answer: [A] Electric field intensity.
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