Question

If the refractive index of glass with respect to air is 3/2, what is the refractive index of air with respect to glass?

Answer 1

Explanation:

its just reciprocal and the answer is 2/3

Answer 2

Answer :

Refractive index of glass wrt air = 3/2

We have to find refractive index of air wrt glass$.$

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◈ Refractive index of medium is defined as the ratio of speed of light in vacuum to the speed of light in medium.

• It is an unitless as well as dimensionless quantity.

Refrative index of medium 1 wrt medium 2 is given by

• η₁₂ = η₁ / η₂

ATQ, refractive index of glass wrt air is 3/2.

Hence, refratctive index of air wrt glass will be reciprocal of 3/2.

፨ RI of air wrt glass = 2/3