Question

The refractive index of glass with respect to air is 32 and the refractive index of water with respect to air is 43. The refractive index of glass with respect to water will be
(a) 1.525
(b) 1.225
(c) 1.425
(d) 1.125

Answer 1

Answer:

0.744

Explanation:

Answer 2

The refractive index of glass with respect to air is 32 and the refractive index of water with respect to air is 43. The refractive index of glass with respect to water will be 1.125

Explanation:

Refractive index of glass with respect to air, nglass= $\frac{3}{2}$

And refractive index of water concerning air, nwater= $\frac{4}{3}$

Now, the refractive index of glass with respect to water, glassnwater = $\frac{\text { Refractive index of glass with respect to air }}{\text { Refractive index of water with respect to air }}=\frac{\text { nglass }}{\text { nwater }}=\frac{\frac{3}{2}}{\frac{4}{3}}=\frac{3}{2} \times \frac{3}{4}=\frac{9}{8}=1.125$Therefore, the refractive index of the glass concerning the water will be 1.125.

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