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Two positively charged particles X and ...

Two positively charged particles ` X` and `Y` are initially far away from each other and at rest , `X` begins to move towards `Y` with some initial velocity. The total momentum and energy of the system are `p` and `E`.

A

If `Y` is fixed both `p` and `E` are conserved.

B

If `Y` is fixed `E` is conserved but not `p`

C

If both are free to move `p` is conserved but not `E`

D

If both are free, `E` conserved, but not `p`.

Text Solution

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The correct Answer is:
B
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