When air is replaced by a dielectric medium of constant K, the maximum force separated by a distance

When air is replaced by a dielectric medium of constant K, the maximum force of attraction between two charges separated by a distance

When air is replaced by a dielectric medium of constant K, the maximum force of attraction between two charges separated by a distance

When air is replaced by dielectric medium of constant K, the maximum force of attraction between two charges separated by distance d, ..........

When air is replaced by a dielectric medium of dielectric constant K, the maximum force of attraction between two charges separated by a distance

When air is replaced by a dielectric medium of constant K, the maximum capacitance of the capacitor

When air is replaced by a dielectric medium of constant K , the capacity of the condenser.

Two charges exert a force of 10 N on each other when separated by a distance 0.2 m in air. When they are placed in another medium of dielectric constant K = 4 , and separated by distance R. they exert same force. The distance R equats to