A bullet of mass m and charge q is fired towards a solid uniformly charge sphere of ra
Channel: Doubtnut
Date: 02/02/2020

A bullet of mass m and charge q is fired towards a solid uniformly charge sphere of radius R and total charge +q. If it strikes the surface of sphere with speed u, find the minimum value of u so that it can penetrate through the sphere. (Neglect all resistance force or friction acting on bullet except electrostatic forces)