Question

refractive index class 8

Answer 1

In optics, the refractive index or index of refraction of a material is a dimensionless number that describes how light propagates through that medium. It is defined as. where c is the speed of light in vacuum and v is the phase velocity of light in the medium.

Answer 2

Refractive index. .the ratio of the speed of radiation (such as light) in one medium (such as air, glass, or a vacuum) to that in another medium.
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