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There is a uniform magnetic field perpen...

There is a uniform magnetic field perpendicular to the plane of paper. A positive charged particle enters in the region perpendicularly, moves in a circle of radius a and collides inelastically at point Q to the rigid wall MN. If coefficient of restitution e = 0.5, then particle

A

Retraces its path

B

Strikes at point O

C

Strikes at point M

D

strikes at point N

Text Solution

Verified by Experts

The correct Answer is:
D
After collision velocity becomes `v//2` so radius becomes `a//2` and hence diameter is a and O will be the centre. So particle strikes at point N.
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