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When two electrons enter into a magnetic...

When two electrons enter into a magnetic field with different velocities , they deflected in different circular parts , in such a way that radius of one path is double that of the other. `1xx10^(7)ms^(-1)` is the velocity of electron in smaller circle of radius `2 xx 10^(-3)m`. The velcoity of electron in the other circular path is:

A

`4xx10^(7)ms^(-1)`

B

`4xx10^(6) ms^(-1)`

C

`2xx10^(7)ms^(-1)`

D

`2xx 10^(6)ms^(-1)`

Text Solution

Verified by Experts

The correct Answer is:
C
` r= (mv)/( Bq)`
`6 pi eta r V_(0) = mg , Eq =mg`
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