Question

explain what is refractive index.

Answer 1

Answer:

The ratio of speed of light in vacuum to its speed in a specific medium. In simpler words; measure of the bending of a ray of light when passing from one medium into another.

Explanation:

Answer 2

optics, the refractive index or index of refraction of a material is a dimensionless number that describes how fast light travels through the material. It is defined as where c is the speed of light in vacuum and v is the phase velocity of light in the medium.

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