## In This post you will get answer of Q.

A proton and an electron both moving with the same velocity $upsilon$ enter into a region of magnetic field directed perpendicular to the velocity of the particles. They will now move in circular orbits such that

Solution:

## Time period of revolution, $T=frac{2pi m}{qB}$

Since $q$ and $B$ are the same for both proton and electron

$therefore, T propto m$

As mass of proton is greater than mass of an electron, therefore

$T_{p}>, T_{c}$