Question

What do you mean by refractive index?

Answer 1

Answer:

Index of Refraction

Refractive Index (Index of Refraction) is a value calculated from the ratio of the speed of light in a vacuum to that in a second medium of greater density. The refractive index variable is most commonly symbolized by the letter n or n' in descriptive text and mathematical equations.

I hope this helps to you friend

Answer 2

Answer:

I have attached.Please make me as brainliest