College Physics 10th Edition by Raymond Serway,Chris Vuille

Exercise 5

Figure P22.59 shows the path of a beam of light through several layers with different indices of refraction. (a) If 1 = 30.0°, what is the angle 2 of the emerging beam (b) What must the incident angle u1 be to have total internal reflection at the surface between the medium with n = 1.20 and the medium with n = 1.00