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A proton of mass 1.6 xx 10^(-27)kg goes...

A proton of mass `1.6 xx 10^(-27)kg` goes round in a circular orbit of radius 0.10 m under a centripetal force of `4 xx 10^(-13) N`. then the frequency of revolution of the proton is about

A

`0.08times10^8` cycles per s

B

`4times10^8` cycles per s

C

`8times10^8` cycles per s

D

`12times10^8` cycles per s

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The correct Answer is:
A
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