The length of second's hand in a watch is \( 1 \mathrm{~cm} \). The change in velocity of its ti...

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The length of second's hand in a watch is \( 1 \mathrm{~cm} \). The change in velocity of its tip in 15 seconds is [MP PMT 1987, 2003]
(a) Zero
(b) \( \frac{\pi}{30 \sqrt{2}} \mathrm{~cm} / \mathrm{sec} \)
(c) \( \frac{\pi}{30} \mathrm{~cm} / \mathrm{sec} \)
(d) \( \frac{\pi \sqrt{2}}{30} \mathrm{~cm} / \mathrm{sec} \)
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