In a medium, force of attraction b/w two-point charges distance d apart is F. What distance apart should these be kept in the same medium so that the force b/w them becomes 3F?

Force of attraction between two point charges placed at a distance 'd' is F. What distance apart should they be kept in the same medium, so that the force between them is 2F ?

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 becomes F//3 ?

The force of attraction between two bodies kept in air at a certain distance apart is F. If they ae now kept in water at the same distace apart, what will be the force of attraction between them?

The force between two point electric charges kept at a distance d apart in air is F. If these charges are kept at the sme distance in water, the force between the charges is F'. The ratio F'//F is equal to ……….. .

Gravitational force between two masses at a distance 'd' apart is 6N. If these masses are taken to moon and kept at same separation, then the force between them will become :

Show that the force of attraction between two short magnets of moment m and m' with their centres d distance apart and their axes in the same direction along the same lines is (mu_(0))/(4pi) (6mm')/(d^(4))

The force of repulsion between two point charges is F, when these are at distance 0.5m apart. Now the point charges are replaced by spheres of radii 5 cm each having the same charge as that of the respective point charge. The distance between their centres is again kept 0.5 m. Then the force of repulsion will

Two point charges 4e and e each, at a separation r in air, exert force of magnitude F. They are immersed in a medium of dielectric constant 16. What should be the separation between the charges so that the force between them remains unchanged.