Question

9. Define the terms.
(a) Refractive index of a medium.
(b) Relative refractive index. ​

Answer 1

Answer:

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Answer 2

Answer:

Refractive index of a medium is defined as the ratio of the speed of light in vacuum to that of the speed of light in the medium. It is also called absolute refractive index.

Relative refractive index is defined as the ratio of speed of light in any medium other than vacuum or air to that of the speed of light in that medium.