the inner radii of a spherical capacitor are a and b respectively.The outer sphere is given a charge +Q and the inner sphere is earthed.Out of Q apart q which will appear on the outer surface is given by?

The chargeQgiven to outer sphere distributes asQ1​outside andQ2​inside which induces charge−Q2​on outside of inner sphere,+Q2​on inside of inner sphere which is earthed.

The chargeQgiven to outer sphere distributes asQ1​outside andQ2​inside which induces charge−Q2​on outside of inner sphere,+Q2​on inside of inner sphere which is earthed.