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An electron is accelerated through a.p.d...

An electron is accelerated through a.p.d of `45.5` volt. The velocity acquired by it is (in `ms^(-1)`)

A

`4 xx 10^(6)`

B

`4 xx 10^(4)`

C

`10^(6)`

D

Zero

Text Solution

Verified by Experts

The correct Answer is:
A
`v = sqrt((2eV)/(m)) = sqrt((2 xx 1.6 xx 10^(-19) xx 45.5)/(9.1 xx 10^(-31))) = 4 xx10^(6) m//s`
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