Am physics protons emerging from an accelerator with 20 kev kinetic energy must be bent at right angle (fig.) by bending magnet so as not to strike a barrier in

AM Physics Protons emerging from an accelerator with 20 keV kinetic energy must be bent at right angle (Fig.) by bending magnet so as not to strike a barrier in their pat 0.4m from their exit hole in the accelerator. The magn must have minimum magnetic field of 2i 8 ot w qool srlh 0.4 m barrier bvsd () looloitnspVBd (d) 019 9d () zwloolbiios bas OOO9wlad ozslio2o (b) lo dosatolion OO Oun Ltm ordT