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A particle A of mass m and charge Q move...

A particle `A` of mass `m` and charge `Q` moves directly towards a fixed particle `B`, which has charge `Q`. The speed of `A` is a `v` when it is far away from `B`. The minimum separtion between the particles is not proportional to

A

`Q^(2)`

B

`(1)/(v^(2))`

C

`(1)/(v)`

D

`(1)/(m)`

Text Solution

Verified by Experts

The correct Answer is:
3

Energy conservation between `①` and `②`
`(1)/(2) mv^(2) = (1)/( 4 pi in_(0)) .(Q^(2))/(d)`
`d = (Q^(2)) /(2 pi in_(0) mv^(2))`
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