Question

define absolute and relative refractive index​

Answer 1

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1.The absolute refractive index is defined as a ratio of the speed of light in vacuum and in selected medium. Generally, the refractive index depends on the wavelength of incident light. Relative refractive index is defined as a ratio of speeds of light in two different media.

2.a number indicating the speed of light in a given medium as either the ratio of the speed of light in a vacuum to that in the given medium (absolute index of refraction) or the ratio of the speed of light in a specified medium to that in the given medium (relative index of refraction) .

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Answer 2

The absolute refractive index is defined as a ratio of the speed of light in vacuum and in selected medium.

a number indicating the speed of light in a given medium as either the ratio of the speed of light in a vacuum to that in the given medium (absolute index of refraction) or the ratio of the speed of light in a specified medium to that in the given medium (relative index of refraction)