Question

If refractive indices of glass and water with respect to air are 3//2 and 4//3 respectively, what is the refractive index of glass with respect to water ?

Answer 1

Answer:

$\frac{9}{8}$

Explanation:

$_{a} n_{g}$  = 3/2

$_{a}n_{w}$ = 4/3

⇒ $_{w}n_{g}$ = $\frac{1}{_{a}n_{w}}$ × $_{a} n_{g}$ =$\frac{3}{4}$  ×  $\frac{3}{2}$ = $\frac{9}{8}$