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Question: If the radius of an orbit is r and the velocity of electron in it is v, the frequency of electron in...

If the radius of an orbit is r and the velocity of electron in it is v, the frequency of electron in that orbit will be –

A

2prv

B

2πvr\frac{2\pi}{vr}

C

vr2π\frac{vr}{2\pi}

D

v2πr\frac{v}{2\pi r}

Answer

v2πr\frac{v}{2\pi r}

Explanation

Solution

T = 2πrv\frac{2\pi r}{v}

but f = 1T\frac{1}{T} = v2πr\frac{v}{2\pi r}