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A charged particle moves through a magne...

A charged particle moves through a magnetic field perpendicular to its direction. Then:

A

the momentum changes but the kinetic energy is constant

B

both momentum and kinetic energy of the particle are not constant.

C

both, momentum and kinetic energy of the particle are constant

D

kinetic energy changes but the the momentum is constant

Text Solution

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The correct Answer is:
1
Magnetic force can not do any work, so kinetic energy remains constant.Since initial velocity is perpendicular to magnetic field, hence momentum will change.
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