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A uniform magnetic field B=B(0)hatj exis...

A uniform magnetic field `B=B_(0)hatj` exists in space. A particle of mass m and charge q is projected towards X-axis with speed v from a point (a,0, 0). The maximum value of v for which the particle does not hit the Y-Z plane is

A

`(Bqa)/m`

B

`(Bqa)/(2m)`

C

`(Bq)/(am)`

D

`(Bq)/(2am)`

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The correct Answer is:
a
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