If velocity in \( 3^{\text {rd }} \) orbit of \( \mathrm{H} \)-atom is \( \mathrm{V} \mathrm{cm}...
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0If velocity in \( 3^{\text {rd }} \) orbit of \( \mathrm{H} \)-atom is \( \mathrm{V} \mathrm{cm} / \mathrm{s} \) then number of revolutions per second around the nucleus in this orbit is approximately given by
(A) \( 3 \times 10^{-7} \mathrm{~V} \)
(B) \( 137 \mathrm{~V} \)
(C) \( \frac{\mathrm{V}}{30} \)
(D) \( \frac{\mathrm{V}}{3 \times 10^{-7}} \)
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