Question

what is refractive index??????????????????????????????????????????????

Answer 1

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Refractive index is 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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Answer 2

Explanation:

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 is called refractive index.