English, asked by sweprnaep1923, 7 months ago

You are Anuj/anju residing a-63 Avanti vihar raipur

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Answered by AnubhavGhosh1

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 where c is the speed of light in vacuum and v is the phase velocity of light in the medium.

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