An electron, a proton and an alpha particle having the same kinetic energy are moving in circular orbits of radii `r_(e),r_(p),r_(alpha)` respectively in a uniform magnetic field B. The relation between `r_(e),r_(p),r_(alpha)` is:

An electron a, proton and an alpha particle having the same kinetic energy moving in circular orbits of radii r_(e), r_(p),r_(alpha respectively in a uniform magnetic field B. The relation between r_(e), r_(p),r_(alpha) is

A proton , a deutron and alpha ) - particle having the same kinetic energy are moving in circular trajectories in a constant magnetic field . If r_(p), r_(d) , and r_(alpha) denote respectively the radii of the trajectories of these particles , then

A proton, a deuteron and an alpha - particle having the same kinetic energy are moving in circular trajectors in a constant magnetic field. If r_p, r_d and r_(alpha) denote respectively the radii of the trajectories of these particles then

A proton, a deuteron and an alpha - particle having the same kinetic energy are moving in circular trajectors in a constant magnetic field. If r_p, r_d and r_(alpha) denote respectively the radii of the trajectories of these particles then

A proton, a deuteron and an alpha - particle having the same kinetic energy are moving in circular trajectories in a constant magnetic field. If r_p, r_d and r_alpha denote respectively the radii of the trajectories of these particles, then