Suppose the ray in Figure 33.16 travels in the opposite direction-that is, from the more dense medium to the less dense medium. If the angle of incidence is now \(\theta_{2}\), how does the angle of refraction compare with \(\theta_{1}\) ?

Transcribed Image Text:

Figure 33.16 (a) Refraction is explained by the behavior of wavefronts that cross at an angle into a transparent medium in which they travel more slowly. (b) Incident, reflected, and refracted rays, showing the angles of incidence 0, and refraction 02 (measured from the normal to the surface). (a) B D (b) angle of incidence incident reflected 0 refracted Distances AC and BD are not equal, so ray changes direction as it crosses interface. angle of refraction