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An alpha particle and a proton travel wi...

An alpha particle and a proton travel with same velocity in a magnetic field perpendicular to the direction of their velocities. The ratio of the radii of their circular paths is

A

`4 : 1`

B

`1:4`

C

`2:1`

D

`1:2`

Text Solution

Verified by Experts

The correct Answer is:
C
As per relation `r - (mv)/(r_p), (r_(alpha))/(r_p) = (m_(alpha))/(m_p) xx (q_p)/(q_(alpha)) = 4/1 xx 1/2 = 2/1 = 2: 1`
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