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A particle A has charge + q and partic...

A particle A has charge + q and particle B has charge + 4q , each of them having the same mass m . When allowed to fall rest through the same electrical potential difference , the ratio speeds will become :

A

`2:1`

B

`1:2`

C

`1:4`

D

`4:1`

Text Solution

Verified by Experts

The correct Answer is:
B
`qV = 1/2 mv^(2)`
`rArr sqrt((2qV)/m) = v rArr v prop sqrt(q)`
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