A proton and an electron, both moving with the same velocity v, enter into a region of magnetic field directed perpendicular to the velocity of the particles. They will now move in circular orbits such that
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a
Their time periods will be same
b
The time period for proton will be higher
c
The time period for electron will be higher
d
Their orbital radii will be same
answer is B.
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Detailed Solution
We know that time period, T=2πmqB, i.e., T ∝ m(Since q and B are same)∵ Mass of proton > Mass of electron∴ Time period of proton > Time period of electron