Two point charges are placed at separation `d` in vacuum and the force between them is `F`.
Channel: Doubtnut
Date: 23/08/2020

Two point charges are placed at separation `d` in vacuum and the force between them is `F`. Now a dielectric slab of thickness `t = d//3` and dielectric constant `K` is placed between the charges and the force becomes `9F//25`. Find the value of `K`.