A conducting sphere of radius R and a concentric thick spherical shell of inner radius 2R and outer radius 3R is shown in figure

Question

A conducting sphere of radius R and a concentric thick spherical shell of inner radius 2R and outer radius 3R is shown in figure A cha 10Q is given to the shell and inner sphere is earthed Then charge on inner sphere is O 4Q O 100 O zero O none

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