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A positively aharged particel (q, m) en...

A positively aharged particel `(q, m)` enters in a uniform magnetic field 'B' at an angle of `60^(@)` as shown in figure with speed `v_(o)`. Collision between the charge particle and the wall is perfectly elastic. Then find the time in which the charge particel comes out from the magnetic field.
`("take" d = ((sqrt3 - 1)mv)/(2qB))`

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The correct Answer is:
`00000.33`
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