Question

Define refractive index?and write its si unit​

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. The index of refraction does not have units. It is the ratio of the speed of light in various mediums so the units cancel out. It is unitless.

Answer 2

Answer:

refractive index or index of refraction of a material is a dimensionless number that describes how light propagates through that medium. The index of refraction does not have units. It is the ratio of the speed of light in various mediums so the units cancel out. It is unitless.

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