The refractive index of diamond is 2.42 and that of carbon disulphide is 1.63. Calculate the refractive index of diamond with respect to carbon disulphide.
1.48
Let, Diamond be 1 and Carbon Disulphide be 2
η1 = 2.42
η2 = 1.63
η21 = 2.421.63 = 1.48