Question

What is Refractive index?



Please Answer​

Answer 1

Answer:

Refractive Index of a Vacuum is 1, Refraction Index is represented by symbol n which is expressed relative to the speed of light in a vacuum. The index of refraction value of a material is a number that indicates the number of times slower that a light wave would be in that material than it is in a vacuum.

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Answer 2

Explanation:

In 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.