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An electron is accelerated through a pot...

An electron is accelerated through a potential difference of 45.5 V. the velocity acquired by it is (in `ms^(-1)`)

A

`4 xx10^6`

B

`4xx10^4`

C

`10^6`

D

Zero

Text Solution

Verified by Experts

The correct Answer is:
A
`ev =1/2mv^2`
`implies v = sqrt((2xx1.6 xx10^(-19)xx45.5)/(9.1 xx10^(-31)))=4xx10^6 m//s`
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