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Q.

A particle having mass m, charge q, enters a cylindrical region having uniform magnetic field B in the inward direction as shown. If the particle is deviated by 600 as it emerges out of the field, then what is the time spent by it in the field?

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a

2πmqB

b

2πm3qB

c

πm3qB

d

It depends on the speed of particle.

answer is C.

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Detailed Solution

Angle rotated in magnetic field = 600So time taken should be 16th of time period.t=T6=16 2πmqB= πm3qB
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