JEE Main Physics question

Spot the wrong statement: The acceleration due to gravity 'g' decreases if [MP PMT 1994]

(A)We go down from the surface of the earth towards its centre
(B)We go up from the surface of the earth
(C)We go from the equator towards the poles on the surface of the earthCorrect
(D)The rotational velocity of the earth is increased

Answer: (C)

Solution

Going down (A), going up (B), and increasing rotation (D) all genuinely decrease (the first two via the mass/distance dependence of gravity, the last via a larger centrifugal term). However, going from the equator towards

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Question ID VK-154564