Question

The refractive index of water is 4/3 and for glass is 3/2 with respect to air. The refractive index of
glass with respect to water is
a) 1/2
b) 4/3
c) 7/8
d) 9/8​

Answer 1

Explanation:

Refractive index of water wrt air= 4/3

Refractive index of glass wrt to air = 3/2

Refractive index of air wrt water = 1/(refractive index of water wrt air) = 1/(4/3) = 3/4

Refractive index of glass wrt water = (Refractive index of glass wrt air) × (refractive index of air wrt water) = (3/2) × (3/4) = 9/8.