A particle of mass ‘m’ carrying a charge ‘q’ enter normally into uniform magnetic induction field ‘B’ . The time taken by the particle to traverse 900 arc is
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a
2πmBq
b
πmBq
c
πm2Bq
d
πm4Bq
answer is C.
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Detailed Solution
Bqυ=mrw2 3600−T 900−? t=90 T360 =T4 But T=2πω=2πmBq t=2πm4Bq=πm2Bq