Force of attraction between two point electric charges placed at a distance"d" in a medium is "F". What distance apart should these be kept in the same medium, so that force between them become F/3?
In a medium the force of attraction between two point electric charges, distance r apart, is F. What distance apart should these be kept in the same medium so that the force between them becomes 3F?
Two charges when kept at a distance of 1m apart in vacuum have some force of repulsion. If the force of repulsion between these two charges be same, when placed in an oil of dielectric constant 4, the distance of separation is :