There is a long solenoid of radius 'R' h...

There is a long solenoid of radius 'R' having 'n' turns per unit length with current i flowing in it. A particle having charge 'q' and mass 'm' is projected with speed 'v' in the perpendicular direction of axis from a Point on its axis. Find maximum value of 'v' so that it will not collide with the solenoid.

`(Rqmu_0ni)/(2m)`

`(2Rqmu_0ni)/(m)`

`(Rqmu_0ni)/(3m)`

`(Rqmu_0ni)/(4m)`

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