Figure shows the path of a beam of light through several layers with different indices of refraction.
(a) If θ1 = 30.0°, what is the angle θ2 of the emerging beam?
(b) What must the incident angle θ1 be in order to have total internal reflection at the surface between the medium with n = 1.20 and the medium with n =1.00?

Transcribed Image Text:

n= 1.60 n= 1.40 n= 1.20 n= 1.00