Question

Two non conducting solid spheres of radii r and 2r having uniform

Answer 1

2 non conducting solid spheres of radii r and 2r having uniform charges densities row 1 and row 2 resp. touchceach other the net electric field at a distance of 2r from the center of smaller center sphere along the line joining the center of sphere is 0 then the ratio of row 1 /row 2 will be .