The force of repulsion between two point charges is $F$, when these are at distance $0.5\mathrm{ }\mathrm{m}$ apart. Now the point charges are replaced by spheres of radii $5\mathrm{ }\mathrm{c}\mathrm{m}$ each having the same charge as that of the respective point charges. The distance between their centres is again kept $0.5\mathrm{ m.}$ Then the force of repulsion will