Question

What do you mean by refractive index of prism and what is its unit?

Answer 1

•Refractive index of a medium is defined as the ratio of free space velocity of light(c) to the velocity of the light in that medium(v).

⭐As it is a ratio of same physical quantity(velocity),it has no unit.

⭐ It's a dimensionless quantity.

Answer 2

Refractive index have no si units, since from the definition refractive index is the ratio of velocity of light in a material divided with velocity of light in vacuum. this is what is meant by "integral".

Hope it helps ya...♥️♥️