A uniform magnetic field exists in the plane of paper as shown in the diagram. In this field, an electron ( e^-) and a positron ( p^+) enter as…

A uniform magnetic field exists in the plane of paper as shown in the diagram. In this field, an electron $\displaystyle \left(\mathrm{e}^{-}\right)$and a positron $\displaystyle \left(\mathrm{p}^{+}\right)$enter as shown. The electron and positron experience forces :