Question

What is the difference between absolute refractive index of a medium and the relative
refractive index of two mediums? What is the relation between them?

Answer 1

the absolute refractive index is the ratio of speed of light in vaccum to the speed of light in the given medium.

the refractive index of two medium is the ratio of speed of light in one medium to the speed of light in another medium.

absolute refractive index is > refractive index of two medium

Answer 2

it's a difference! ..
■The absolute refractive index is defined as ratio of the speed of light in vaccum or in selected medium.
■relative index depends upon wavelength of incident light.that is ratio of light in different media.

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