3_Chapter 22 HomeworkCH22 Reflection and Refraction of Light

3_Chapter 22 HomeworkCH22 Reflection and Refraction of...

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Unformatted text preview: Reflection and Refraction of Light 18. 235 The cross section can be visualized by considering just the two rays of light on the edges of the beam. If the beam of light enters a new medium with a higher index of refraction, the rays bend toward the normal, and the cross section of the refracted beam will be larger than that of the incident beam as suggested by Fig. CQ22.18a. If the new index of refraction is lower, the rays bend away from the normal, and the cross section of the beam is reduced, as shown in Fig. CQ22.18b. 1 1 2 2 n2 > n1 n2 < n1 (b) (a) Figure CQ22.18 ...
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