A proton,deuteron and an alpha particle having same KE are moving in circular trajectories in constant magnetic field.If rp,rd,ra denote respectively radiys of their trajectories then 1.ra=rp>rd 2.ra>rd>rp 3.ra=rd 4.rp=rd=ra Share with your friends Share 0 Shivam Ranjan Sinha answered this 1 View Full Answer