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A proton an an alpha-particle, moving wi...

A proton an an `alpha-`particle, moving with the same velocity, enter a uniform magnetic field, acting normal to the plane of their motion. The ratio of the radii of the circular paths descirbed by the proton and `alpha`-particle is

A

`2:1`

B

`1:2`

C

`4:1`

D

`1:4`

Text Solution

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The correct Answer is:
B
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