A force of `4N` is acting between two charges in air.If the space between them is completely filled with glass `(epsilon_(r)=8)` then the new force will be

A force of 4N is acting between two charges in air.If the space between them is completelly filled with glass (epsilon_(r)=8) then the new force will be

How the force acting between two charges will change if the air medium betweeen them is replaced by metalic plate?

The force of attraction between two charges separated by certain distance in air is F_(1) .If the space between the charges is completely filled with dielectric of constant 4 the force becomes F_(2) .If half of the distance between the charges is filled with same dielectric the force between the charges is F_(3) Then F_(1):F_(2):F_(3) is