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An electron and a proton enter region of...

An electron and a proton enter region of uniform magnetic field in a direction at right angles to the field with the same kinetic energy. They describe circular paths of radius `r_(e)` and `r_(p)` respectively. Then

A

`r_(e)=r_(p)`

B

`r_(e)ltr_(p)`

C

`r_(e)gtr_(p)`

D

`r_(e)` may be less than or greater than `r_(p)` depending on the direction of the magnetic field

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The correct Answer is:
B
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