Question

what is the unit of refractive index??​

Answer 1

Answer:

no units

Explanation:

Refractive index of a medium is the ratio of the speed of light in vacuum to the speed of light in the medium.Therefore, it has no units.

Answer 2

Answer:

Unit of refractive index (μ) will be the ratio of the unit of speed of light in vacuum(c) to the speed of light in the given medium(v). As you can see, the unit of refractive is 1, which means the refractive index is just a number without any unit.