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