Question

A proton and an electron traveling along parallel enter a region of uniform magnetic field, acting perpendicular to their path.which them will move in a circular path with higher frequency

Answer 1

r = mv/ab so radius directly proportional with momentum
nd de Broglie says momentum inversely with wavelength , directly with frequency
soo radius / momentum is directly proportional to frequency
now since velocity is same soo
mass directly with frequency
in that case I think answer should be proton...
hope it helps