Question

What is refractive index? What is its physical significance?​

Answer 1

Explanation:

REFRACTIVE INDEX::--

the ratio of the velocity of light in a vacuum to its velocity in a specified medium.

ITS PHYSICAL SIGNIFICANTCE::--

The refractive index of any medium gives the ratio of the speed of light in vacuum to the speed of light in that medium. ... This means that the ratio of the speed of light in vacuum or air to the speed of light in water is 1.33.

Answer 2

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▪︎It is the ratio of the speed of light in vacuum with respect to speed of light in given medium .

▪︎It measures the bending of light when it travels from one medium to another. It is also called the Index of Refraction.