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An electron falls through a small distan...

An electron falls through a small distance in a uniform electric field of magnitude `2xx10^(4)NC^(-1)`. The direction of the field reversed keeping the magnitude unchanged and a proton falls through the same distance. The time of fall will be

A

same in both cases

B

more in the case of electron

C

more in the case of proton

D

independent of charge

Text Solution

Verified by Experts

The correct Answer is:
c
The time required to fall through distance `d` is
`d=(1)/(2)((qE)/(m))t^(2)` or `t= sqrt((2dm)/(qE))`
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