Question

A ray of light falls on a transparent slab of mu = 1.732. If reflected and refracted rays are mutually perpendicular, what is the angle of incidence ?

Answer 1

Answer:

i think the angle may be 90

Answer 2

Answer:

tani= ú

tani=1.732

tani=tan60° ( as 1.732 =√3) [tan60°=√3]

so i=60°