Question

Explation Refractive index. ​

Answer 1

Relative refractive index: When light travels from one medium to another medium, then the refractive index is known as the relative refractive index.

Answer 2

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Refractive Index (Index of Refraction) is a value calculated from the ratio of the speed of light in a vacuum to that in a second medium of greater density. The refractive index variable is most commonly symbolized by the letter n or n' in descriptive text and mathematical equations.