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Question

A charge particle of charge q and mass m is moving with velocity v as shown in figure in a uniform magnetic field B along negative z-direction. Select the correct alternative(s).

A
Velocity of the particle when it comes out from the magnetic field is v=v cos 60 J
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B

Time for which the particle was in magnetic field is πm3qB

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C
Distance travelled in magnetic field is πmv2qB
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D
magnitude the momentum of the particle when it exits is mV
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Solution

The correct options are
A Velocity of the particle when it comes out from the magnetic field is v=v cos 60 J
B

Time for which the particle was in magnetic field is πm3qB


D magnitude the momentum of the particle when it exits is mV
AB=π3r=πmu3qBTime t=θω=π32πT=T6=π3qBDistance=vt=(πm3qB)v=πmv3Bq

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