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 cirular orbits such that

Options

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

B

Explanation

We know that time period `T=(2pim)/(qB)` i.e. `Tpropm`
(Since `q` and `B` are same )
`:'` Mass of protongtMass of electron
`:.` Time period of protongtTime of electron