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Momentum

When a magnet...

Question

When a magnetic field is applied in a direction perpendicular to the direction of cathode rays, then their?

A

Energy decreases

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B

Energy increases

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C

Momentum increases

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D

Momentum and energy remain unchanged

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Solution

The correct option is D Momentum and energy remain unchanged
Since force being perpendicular to direction of motion, Energy and magnitude of momentum remains constant.

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