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A proton and an alpha-particle enter a m...

A proton and an alpha-particle enter a magnetic field in a direction perpendicular to it. If the force acting on the proton is twice that acting on the alpha-particle , the ratio of their velocities is

A

`4:1`

B

`1:4`

C

`1:2`

D

`2:1`

Text Solution

Verified by Experts

The correct Answer is:
A
`F = B qv`
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