Chapter 33, Problem 52P

In Fig. 33-52a, a beam of light in material 1 is incident on a boundary at an angle of θ₁ = 30°. The extent of refraction of the light into material 2 depends, in part, on the index of refraction n₂ of material 2. Figure 33-52b gives the angle of refraction θ₂ versus n₂ for a range of possible n₂ values. The vertical axis scale is set by θ_2a = 20.0° and θ_2b = 40.0°. (a) What is the index of refraction of material 1? (b) If the incident angle is changed to 60° and material 2 has n₂ = 2.4, then what is angle θ₂?

Figure 33-48 Problem 48.