A force F acts between sodium and chlorine ions of salt (sodium chloride) when put 1 cm apart in air. The permittivity of air and dielectric constant of water are `epsilon_(0)` and k respectively. When a piece of salt is put in water, electrical force acting between sodium and chlorine ions 1cm apart is

Na Cl moecule is bound due to the electreic force between the sodium and the chlorine ions when one electron of sodium and the chlorine ions when one electron of sodium is transferred to chlorine. Taking the separaton between the ions to be 2.75xx10^(-8) cm, find the force of attraction between them. State the assumptions (if any) that you have made.

Na Cl molecule is bound due to the electric force between the sodium and the chlorine ions when one electron of sodium and the chlorine ions when one electron of sodium is transferred to chlorine. Taking the separaton between the ions to be 2.75xx10^(-8) cm, find the force of attraction between them. State the assumptions (if any) that you have made.

Na Cl moecule is bound due to the electreic force between the sodium and the chlorine ions when one electron of sodium and the chlorine ions when one electron of sodium is transferred to chlorine. Taking the separaton between the ions to be 2.75xx10^(-8) cm, find the force of attraction between them. State the assumptions (if any) that you have made.

Two point charges repel each other with a force F when placed in water of dielectric constant 81. What will be the force between them when placed the same distance apart in air ?

The force of attraction between two balls each of mass 1 kg when their centres are 10 cm apart is ……..

The ratio of the force between two small spheres (with constant charges) F_(1) in air and F_(2) in a medium of dielectric constant k is respectively..

The force acting between two point charges q_1 and q_2 kept at the same distance apart in air is attractive or repulsive when q_1q_2 > 0 .

The force acting between two point charges q_1 and q_2 kept at the same distance apart in air is attractive or repulsive when q_1q_2<0 .