Question

what is the formula of refractive index
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Answer 1

Explanation:

Refractive index is the measure of bending of a light ray when passing from one medium to another. It can also be defined as the ratio of the velocity of a light ray in an empty space to the velocity of light in a substance, n = c/v.

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Answer 2

Answer:

n = c/v

Explanation:

The refractive index formula is given as

n = c/v

where,

n = refractive index of the medium

c = speed of light when in vacuum

v = speed of light when in medium