Wednesday, April 24, 2019

WBCS Polity and Constitution MCQs Prelims and Mains

WBCS Prelims and Mains MCQs on General Science (Physics) P12

Physics - 12

56. When white light is passed through a glass prism, which of the following colors is refracted the most?
(A) Orange
(B) Violet
(C) Blue
(D) Red

Correct Answer: [B] Violet.
57. A rocket leaves the earth, lands on the moon and returns to earth. It will require the maximum energy to
(A) Rise from the moon
(B) Land on the earth
(C) Rise from the earth
(D) Land on the moon

Correct Answer: [C] Rise from the earth.
58. 1 nm is equivalent to
(A) 10 mm
(B) 0.01 mm
(C) 10 A
(D) 100 A

Correct Answer: [C] 10 A.
59. An object moving with constant speed on a horizontal surface will not have
(A) Kinetic energy
(B) Acceleration
(C) Velocity
(D) Momentum

Correct Answer: [B] Acceleration.
60. What is increased in the step-up transformer?
(A) Wattage
(B) Current density
(C) Voltage
(D) Current

Correct Answer: [C] Voltage.


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