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

A particle of charge q and mass m is moving with a velocity `-v hati (v ne0)` towards a large screen placed int eh Y-Z plane at a distance d. If there is a magnetic field `vecB = B_0 hatk` , the minimum value of v for which the particle will not hit the screen is :

A

`(qdB_0)/(3m)`

B

`(2qdB_0)/(m)`

C

`(qdB_0)/(m)`

D

`(qdB_0)/(2m)`

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