A) Unity
B) Zero
C) Infinity
D) Varying between zero and infinity
Correct Answer: B
Solution :
[b] Centripetal force acts along the radius towards the centre of the circle, but the displacement is perpendicular to the force at all points on the circle. W = FS cos 90° \[=0\left( \because cos\,\,90{}^\circ =0 \right)~\]
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