Question

the absolute refractive index is expressed in dash​

Answer 1

Answer:

Don't know.

Explanation:

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Answer 2

Answer:

Absolute refractive index of a medium is the refractive index with respect to its volume. C/V is the ratio of light's velocity in vacuum to light's velocity in a medium. Relative refractive index can be defined as the ratio between the velocities of light V1 and V2 in a given medium.