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9_Ch 22 College Physics ProblemCH22 Reflection and Refraction of Light

# 9_Ch 22 College Physics ProblemCH22 Reflection and Refraction of Light

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Reflection and Refraction of Light 241 22.9 (a) From Snell’s law, ( ) 1 1 2 2 1.00 sin30.0 sin 1.52 sin sin19.24 n n θ θ ° = = = ° (b) 0 2 2 632.8 nm 417 nm 1.52 n λ λ = = = (c) 8 14 9 0 3.00 10 m s 4.74 10 Hz 632.8 10 m c λ × = × × f = = in air and in syrup (d) 8 8 2 2 3.00 10 m s 1.98 10 m s 1.52 c n × = × v = = 22.10 (a) When light refracts from air ( ) 1 1.00 n = into the Crown glass, Snell’s law gives the angle of refraction as 1 2 sin sin25.0 θ = ° 2 Crown glass n For first quadrant angles, the sine of the angle increases as the angle increases. Thus, from the above equation, note that θ will increase when the index of refraction of the Crown glass decreases. From Figure 22.14, this means that
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