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An electron of mass 0.90 xx 10^(-30) kg ...

An electron of mass `0.90 xx 10^(-30)` kg under the action of a magnetic field moves in a circle of 2.0 cm radius at a speed `3.0 xx 10^6 ms^-1`. If a proton of mass `1.8 xx 10^(-27) kg` was to move in a circle of the same radius in the same magnetic field, then its speed will be

A

`1.5 xx 10^(3) m//s`

B

`3 xx 10^(6) m//s`

C

`6 xx 10^(4) m//s`

D

`2 xx 10^(8) m//s`

Text Solution

Verified by Experts

The correct Answer is:
A
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