JEE Main Physics question

Assertion: There is no effect of the rotation of the earth on the acceleration due to gravity at the poles. Reason: Rotation of the earth is about the polar axis.

(A)Assertion is True, Reason is True; Reason is correct explanation for AssertionCorrect
(B)Assertion is True, Reason is True; Reason is not correct explanation for Assertion
(C)Assertion is True, Reason is False
(D)Assertion is False, Reason is True

Answer: (A)

Solution

Since the earth rotates about the polar axis, a point at a pole lies ON the rotation axis itself, so it experiences no centrifugal effect

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Question ID VK-154769