The refractive index of water is 4/3 and that of glass is 3/2. The refractive index of glass with respect to water is:
9/8
Reason — Given,
aμw = 43\dfrac{4}{3}34
aμg = 32\dfrac{3}{2}23
wμg = Refractive index of glass Refractive index of water\dfrac{\text{Refractive index of glass }}{\text {Refractive index of water}}Refractive index of waterRefractive index of glass
Substituting we get,
wμg = 3/2 4/3\dfrac{\text{3/2 }}{\text {4/3}}4/33/2 = 3 x 3 2 x 4\dfrac{\text{3 x 3 }}{\text {2 x 4}}2 x 43 x 3 = 98\dfrac{9}{8}89
