3. Figure on the right shows the multiple reflections of a light ray along a glass corridor where the walls are either parallel or perpendicular to one another. If the angle of incidence at point a is 30, what are the angles of reflection of the light ray at points b, c, d, e, and fl e 4. Each part of the figure below shows light that refracts through an interface between two materials. The incident ray (shown gray in the figure) consists of red and blue light. The approximate index of refraction for visible light is indicated for each material. Which of the three parts show physically possible refraction? Explain your reasoning. n = 1.5 n = 1.3 n = 1.3 D = 1.5 ( a) Question 11. 5. Figure on the right shows rays of monochromatic light passing through three materials a, b, and c. Rank the materials according to the index of refraction, greatest first. 6 Explain your reasoning- C Page 1 of 2 NS-113 Physics of Color F23 6. Figure on the right shows four long horizontal layers A - D of different 1.3 A materials, with air above and below them. The index of refraction of each material is given. Rays of light are sent into the left end of each layer as shown. In which layer is there the possibility of totally trapping 1.4 1.3 D the light in that layer so that, after many reflections all the light reaches the right end of the layer? Explain your reasoning. Fig. 33-32 Question 9