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A particle mass m charge Q and kinetic e...

A particle mass `m` charge `Q` and kinetic energy `T` eneters transverse unifrom magnetic fiedl of induction `vec(B)` After `s` the kinetic energy or the particle will be

A

`T`

B

` 4T`

C

`3 T`

D

`2 T`

Text Solution

Verified by Experts

The correct Answer is:
A
Magnetic force changes direction of velocity, not its magnitude hence kinetic energy remains same.
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