A ray of light strikes the midpoint of one face of an equiangular (60-60-60) glass prism (n = 1.5) at an angle of incidence of 30.

3. A ray of light strikes the midpoint of one face of an equiangular (60°-60°-60°) glass prism (n = 1.5) at an angle of incidence of 30°. (a) Trace the path of the light ray through the glass, and find the angles of incidence and refraction at each surface. (b) If a small fraction of light is also reflected at each surface, find the angles of reflection at these surfaces. ( a) 19o, 41o, 77o b) 30o, 41o )