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A charge particle of charge 'q' and mass 'm' enters in a given magnetic field 'B' and perpendicular to the magnetic field as shown in the figure. It enters at an angle of `60^(@)` with the boundary surface of magnetic field and comes out at an angle of `30^(@)` with the boundary surface of the magnetic field as shown in the figure. Find width 'd' in which magnetic field exist.

A

`((sqrt3-1)mv)/(4qB)`

B

`((sqrt3-1)mv)/(qB)`

C

`((sqrt3-1)mv)/(3qB)`

D

`((sqrt3-1)mv)/(2qB)`

Text Solution

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The correct Answer is:
d
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