define refractive index
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- In optics, the retraction index or index of refraction of a material is the dimensionless number that describes how fast light passes through the material.
- It is defined as , n = c/v.
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Answer:
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
where , n is the refractive index of the medium
c is the velocity of light in vacuum
v is the velocity of light in the medium
Explanation:
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