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A proton of mass m collides elastically ...

A proton of mass m collides elastically with a particle of unknown mass at rest After the collision the proton and the unknwon particle are seen moving at an angle fo `90^(@)` with respect to each other The mass of unknown particle is :

A

`m(sqrt3)`

B

`m/2`

C

`2m`

D

`m`

Text Solution

Verified by Experts

The correct Answer is:
D
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