30_Ch 22 College Physics ProblemCH22 Reflection and Refraction of Light

30_Ch 22 College Physics ProblemCH22 Reflection and Refraction of Light

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262 CHAPTER 22 22.58 Horizontal light rays from the setting Sun pass above the hiker. Those light rays that encounter raindrops at 40.0° to 42.0° from the hiker’s shadow are twice refracted and once reflected and reach the hiker as the rainbow. The hiker sees a greater percentage of the violet inner edge, so we consider the red outer edge. The radius R of the circle of droplets is ( ) 8.00 km sin42.0 5.35 km
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