Question

Waht is Refractive index?​

Answer 1

Answer:

Refractive index

Explanation:

In optics, the refractive index of a material is a dimensionless number that describes how fast light travels through the material.

It is defined as n= c/v,

where c is the speed of light in vacuum and

v is the phase velocity of light in the medium.

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Answer 2

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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.