Question

The absolute refractive index of gas is 3/2. Find
critical angle.

Answer 1

I hope you got it...........

Answer 2

refractive index(rf) of glass=3/2
critical angle=c=?
rf=1/sin c
sin c=1/rf
c=sin^-1{1/(3/2)}
c=sin^-1(2/3)
c=41.81..