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A particle of charge q and mass m is pro...

A particle of charge q and mass m is projected with a velocity `v_0` toward a circular region having uniform magnetic field B perpendicular and into the plane of paper from point P as shown in Fig. 1.136. R is the radius and O is the center of the circular region. If the line OP makes an angle `theta` with the direction of `v_0` then the value of `v_0` so that particle passes through O is

A

`(qBR)/(msintheta)`

B

`(qBR)/(2msintheta)`

C

`(2qBR)/(msintheta)`

D

`(3qBR)/(2msintheta)`

Text Solution

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The correct Answer is:
B
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