Determine refractive index of a substance if critical angle is `45^(@)`.

Determine the refractive index of a substance if cirtical angle is 45^@ .

Determine the refractive index of benzene if the critical angle of benzene with respect to air is 42^(@) . (AS_(1))

Determine the refractive index of benzene if the critical angle of benzene with respect to air is 42^(@) . (AS_(1))

Derive relation between refractive index and critical angle.

Refractive index of glass is 1.5 find critical angle for glass.

Derive a relation between refractive index and critical angle.