Define Refractive index
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refractive index of second medium with respect to first medium is defined as the ratio of sine of angle of incidence in the first medium to the sine of angle of refraction in the second medium
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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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