Wednesday, April 24, 2019

WBCS Polity and Constitution MCQs Prelims and Mains

General Science Practice Sets for WBCS, SSC, Rail, UPSC Exam P10

Physics - 10

46. Dyne sec. stands for the unit of
(A) Energy
(B) Power
(C) Force
(D) Momentum.

Correct Answer: [D] Momentum..
47. Einstein was awarded the Nobel Prize for
(A) General theory of relativity
(B) Explanation of Brownian motion
(C) Photoelectric emission
(D) Special theory relativity.

Correct Answer: [C] Photoelectric emission.
48. The periodic time of a Pendulum depends on
(A) The shape of its Bob
(B) The volume of its Bob
(C) The density of its Bob
(D) Its length.

Correct Answer: [D] Its length..
49. A piece of stone tied to a string is being rotated in a vertical plane with constant angular velocity. The tension of the string will be maximum when
(A) The string is horizontal
(B) The tension is always the same
(C) The stone is in the highest position
(D) The stone is in the lowest position.

Correct Answer: [D] The stone is in the lowest position..
50. The temperature at which Celsius and Fahrenheit's scales give the same reading is
(A) - 40°C
(B) 40°C
(C) 0°C
(D) 32°C.

Correct Answer: [A] - 40°C.


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