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A charged particle moving in a uniform m...

A charged particle moving in a uniform magnetic field penetrates a layer of lead and there by loses one-half of its kinetic energy. How does the radius of curvature of its path change?

A

The radius reduces to `r sqrt(2)`

B

The radius reduces to `r/sqrt2`

C

The radius remains the same

D

The radius becomes `r//2`

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The correct Answer is:
B
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