Question

explain refactive index and give their equation​

Answer 1

Answer:

Refractive index, also called index of refraction, measure of the bending of a ray of light when passing from one medium into another. ... Refractive index is also equal to the velocity of light c of a given wavelength in empty space divided by its velocity v in a substance, or n = c/v.

Answer 2

The ratio of the velocity of light in a vacuum to its velocity in a specified medium.

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