Which one of the following statements about the refractive
index of a material medium with respect to air is correct?

The refractive index of a medium with respect to vacuum

The refractive index of a medium with respect to vacuum

Which of the following doesn.t represent the refractive index of medium-2 with respect to medium-1 ?

Which one of the following statements is correct ? The refractive index of a given piece of glass is

Which one of the following statements is correct ? The refractive index of a given piece of glass is

The refractive index of medium with respect to air, for the critical angle 60^(@) is

The refractive index of medium with respect to air, for the critical angle 60^(@) is

Answer the following questions If the refractive index of a certain material with respect to air is 1.5, what is the refractive index of air with respect to that material ?

The refractive index of a medium with respect to air the critical angle 60^@ is given by