The critical angle for water is `48.2^@`. Find is refractive index.

The critical angle for diamond is 30°. What is its refractive index?

The critical angle for a medium is 60^(@) . The refractive index of the medium is

A critical angle for a medium is 60^@ . Then the refractive index of the medium will be

Find the critical angle for a glass-water interface,if refractive index of glass 3//2 and that of water is 4//3 .