Question

The refractive index of water is 4/3 and that of glass is 3/2. Calculate the refractive index of glass with respect to water.

Answer 1

Refractive index of water = $n_1$ = $\frac{4}{3}$

Refractive index of glass = $n_2$ = $\frac{3}{2}$

Therefore

Refractive index of flint glass with respect to water = $\frac{n_1}{n_2}$ = 1.1