Question

define refractive index and express it mathematically​

Answer 1

Explanation:

Refractive index is a number which measures the bending of light when passing from one medium to another. It is the ratio of velocity of light in vacuum to the velocity of light in the medium. Mathematically, Refractive index, µ = Velocity of light in vacuum/Velocity of light in medium.

Answer 2

Answer:

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Explanation:

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answer...

The absolute refractive index is defined as the ratio of the speed of light in vacuum and in the given medium. The absolute refractive index should never be less than 1.

Let c be the speed of light in vacuum and v in the given medium, then absolute refractive index is given as:

n=fraccv

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