Wednesday, April 24, 2019

WBCS Polity and Constitution MCQs Prelims and Mains

General Science (Physics) Quiz For WBCS, WBPSC Exams P6

Physics - 06

26. A clear piece of glass immersed in glycerol cannot be seen separately because the comparison to the refractive index of glycerol, the refractive index of glass is
(A) Nearly equal
(B) This does not depend on the refractive index
(C) Greater
(D) Lesser.

Correct Answer: [A] Nearly equal.
27. The hydraulic breaks used in automobiles is a direct application of -
(A) Pascal's law
(B) Archimedes
(C) Bernoulli's theorem
(D) Torricelli law.

Correct Answer: [A] Pascal's law.
28. If a pendulum clock be taken from the equator to the poles, it will
(A) Given the same time
(B) stop altogether
(C) Run slow
(D) Run fast.

Correct Answer: [D] Run fast..
29. When a body is lifted by hand, what type of work is performed by hand?
(A) Third type of lever
(B) Simple machine
(C) First type of lever
(D) Second type of lever.

Correct Answer: [A] Third type of lever.
30. The same force is applied to two bodies A and B of masses m and 5m respectively for the same time. Then
(A) The momentum of A will be greater.
(B) The momentum of B will be greater.
(C) The velocity of A and B will be the same.
(D) The momentum of A and B will be the same.

Correct Answer: [D] The momentum of A and B will be the same..


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