Question

If the index of glass with respect to air is 3\2, the critical angle of glass will be what

Answer 1

If C is the critical angle for a denser medium of absolute refractive index µ 1 ..... Refractive index of glass with respect to water, ω µ g = 7.

The Critical Angle - The Physics 

Answer 2

c =sin^-1(1/n)

c=sin^-1(1/1.5)

c=sin^-1(0.67)