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An electron is projected in a perpendicu...

An electron is projected in a perpendicular uniform magnetic field of `3 xx 10^(-3)` T . If electron moves in circle of radius 4 mm , then linear momentum of electron is

A

`1.92 xx 10^(-21)` kg m/s

B

`1.92 xx 10^(-24)` kg m/s

C

`1.2 xx 10^(-21)` kg m/s

D

`3.2 xx 10^(-21) ` kg m/s

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The correct Answer is:
B
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NIKITA PUBLICATION-ELECTRONS AND PHOTONS -MCQs
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