Three concentric metallic spherical shells of radii , ,
PHYSICS · Single correct · CBSE · Physics · Electrostatic Potential and Capacitance · Electrostatic Potential and Capacitance
Problem
Three concentric metallic spherical shells of radii R , 2R , 3R , are given charges Q1 , Q2 , Q3 , respectively. It is found that the surface charge densities on the outer surfaces of the shells are equal. Then, the ratio of the charges given to the shells, Q1:Q2:Q3 , is [2009]
(1) 1:2:3
(2) 1:3:5
(3) 1:4:9
(4) 1:8:18