Question

an alpha particle and a proton moving with the same speed enter into the same magnetic field region at right angles to the direction of the field. Show the trajectories followed by the two particles in the region of the magnetic field. Find the ratio of their radii of their circular paths ?? WHY CAN'T BE THE RATIO 1:2 RATHER THAN 2:1 ??? WHY IS THE RATIO SUCH TAKEN ????

Answer 1

r =mv/qb where v and b are same then mass of alpha is 4 and charge is 2 and for proton mass is 2 and charge is 1 then r(alpha) /r (proton) is 1:1