Wednesday, April 24, 2019

WBCS Polity and Constitution MCQs Prelims and Mains

WBCS Previous Years MCQs on General Science (Physics) P7


Physics - 07

31. Which of the following not a unit of length?
(A) AU
(B) Radian
(C) Light year
(D) Micron.

Correct Answer: [B] Radian.
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32. Given the Premises(i) A human cannot live without an atmosphere(ii) The moon is without atmosphereThen which of the following conclusions is valid?
(A) The man cannot live on the moon
(B) There is no life possible on the moon
(C) Some men cannot live on the moon
(D) All of these.

Correct Answer: [A] The man cannot live on the moon.
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33. The immersed portion of a piece of pure ice floating in water is
(A) 10/11th of its volume.
(B) 11/12th of its volume
(C) 8/9th of its volume.
(D) 9/10th of its volume.

Correct Answer: [D] 9/10th of its volume..
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34. The weight of an iron ball on earth is 12 kg. Its weight on the moon will be
(A) 12 kg.
(B) 2 kg.
(C) 18 kg.
(D) 9 kg.

Correct Answer: [B] 2 kg..
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35. A glass bulb is balanced by a brass weight on a sensitive beam balance. Now the balance is covered by a bell-jar which is then evacuated
(A) The pan containing the bulb will go up or down depending on the degree of vacuum produced
(B) The pan containing the bulb will go down
(C) The beam will continue to remain horizontal
(D) The pan containing the bulb will go up.

Correct Answer: [B] The pan containing the bulb will go down.
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