Question

what is the meaning of same refractive index
pls answer someone in simple explanation.​

Answer 1

Answer

Ratio

Explanation:

The absolute refractive index is defined as the ratio of the speed of light in vacuum and in the given medium. The absolute refractive index should never be less than 1.

Let c be the speed of light in vacuum and v in the given medium, then absolute refractive index is given as:

n = c/v

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Answer 2

What is same refractive index?

In theory, if two materials have exactly the same refractive index, the light passes through without any (or minimal) scattering or refraction. The light travels straight because it cannot detect any difference in the two materials, hence the speed of the travelling light does not