Jee Main
Electrostatics
JEE Main 2023 (Online) 10th April Morning Shift
INTEGER+4 / -12023
Three concentric spherical metallic shells X, Y and Z of radius a, b and c respectively [a < b < c] have surface charge densities \(\sigma,-\sigma\) and \(\sigma\) respectively. The shells X and Z are at same potential. If the radii of X & Y are 2 cm and 3 cm, respectively. The radius of shell Z is _________ cm.