Calculate the change which must be placed on a sphere of radius 10 cm in order that the
Channel: Doubtnut
Date: 2021-11-02

Calculate the change which must be placed on a sphere of radius 10 cm in order that the repulsion per square mertre of the surface  may just  balance the atmospheric pressure which is `1.013xx10^(5)Nm^(-2)``["Hint":P=(sigma)/(2epsi_(0))and Q=4pir^(2)sigma]`