Question

what is refractive index what does it represent​

Answer 1

Answer:

Refractive Index : It is the ratio of sine of angle of incidence to the sin of angle of refraction for a given pair of media

It is represented by Greek letter Meu(u)

u= sin i/ sin r

Explanation:

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Answer 2

Answer:

the ratio of speed of light in vacuum to that in the medium is called refractive index