10 two dielectric spheres of radius r are separated by a distance a such that a>>r. 0ne of the spheres (sphere 1) has a charge g and the other is neutral. if th

10 Two dielectric spheres of radius R are separated by a distance a such that a>>R. 0ne of the spheres (sphere 1) has a charge g and the other is neutral. If the linear dimensions of the systems are scaled up by a factor two, by what factor should be change on the sphere 1 be changed so that the force between the two spheres remain unchanged? (a) 2 b 42 (c) 4 (d) 2/2 Ans.