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Electron moves in uniform magnetic field...

Electron moves in uniform magnetic field perpendicular to direction of field . The magnitude of field is `35.21 xx 10^(-6) T`. Calculate the time in which it will perform one revolution .
(e/m = `1.76 xx 10^(11) ` C/kg)

A

1 `mus`

B

`0.5 mu s`

C

`2 mus`

D

`1.5 mu`s

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The correct Answer is:
A
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