Question

what is refractive index ​

Answer 1

Answer:The ratio of the speed of light in vacuum to the speed of light in the given media

Explanation:Formula: Speed of light in vacuum / speed of Light in given media

Answer 2

$\huge\bold\red{ANSWER:-}$

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.

====================

Follow me....