The force of repulsion between two point charges is F, when these are at a distance of `1 m`. Now the point charges are replaced by spheres of radii `25 cm` having the charge same as that of point charges. The distance between their centres is `1 m`, then compare the force of repulsion in two cases.

Explanation

In `2^(nd)` case due to mutual repulsion, the effective distance between their centre of charges will be increased `(d' gt d)` so force of repulsion decreases as `F prop 1/d^(2)`