A proton (mass m and charge `+e`) and an `alpha`-particle (mass `4` m and charge `+2e`) are projected with the same kinetic energy at right angles to the uniform magnetic field. Which one of the following statements will be true?

Options

A. The `alpha`- particle will be bent in a circular path with a small radius that for the proton
B. The radius of the path of the `alpha-` particle will be greater than that of the proton
C. The `alpha-` particle and the proton will be bent in a circular path with the same radius
D. The `alpha-` particle and the proton will go through the field in a straight line

Answer

C