Four particles-proton, electron, alpha, and neutron-enter a region of constant magnetic field with same velocities. The magnetic field is perpendicularto the velocity .A] Which particle [s] are not be deflected by the magnetic field ?B] Which particle [s] are deflected by the magnetic field ?C] Which particle experiences maximum force ? Justify .

Four particles-proton, electron, alpha, and neutron-enter a region of

1.	Four particles-proton, electron, alpha, and neutron-enter a region of constant magnetic field with same velocities. The magnetic field is perpendicularto the velocity .A] Which particle [s] are not be deflected by the magnetic field ?B] Which particle [s] are deflected by the magnetic field ?C] Which particle experiences maximum force ? Justify .
Answer» Solution :A] Only NEUTRON is not deflected by the magnetic field . Magnetic force is given by F = q v B. For a neutron, charge q = 0 and hence, F = 0 B] Proton, electron, and ALPHA particles are deflected as they CARRY a charge. C] Alpha particle experiences maximum force because it has the maximum charge.