JEE Main Physics question

The average acceleration vector, over one complete revolution, for a particle having uniform circular motion is

(A)A constant vector of magnitude
(B)A vector of magnitude directed normal to the plane of the given circular motion
(C)Equal to the instantaneous acceleration vector at the start of the motion
(D)A null vectorCorrect

Answer: (D)

Solution

The acceleration vector has constant magnitude but rotates uniformly through

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Question ID VK-158130