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15_Chapter 22 HomeworkCH22 Reflection and Refraction of Light

15_Chapter 22 HomeworkCH22 Reflection and Refraction of Light

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Reflection and Refraction of Light 247 Finally, using Snell’s law in the third placement gives ( ) 1 1 3 1 sin26.5 sin31.7 sin sin26.5 0.392 sin36.7 R n n n n θ ° ° = = ° = ° and 23.1 R θ = ° 22.27 When the Sun is 28.0° above the horizon, the angle of incidence for sunlight at the air-water boundary is 1 90.0 28.0 62.0 θ = ° − ° = ° Thus, the angle of refraction is ( ) 1 1 2 1 sin sin 1.00 sin62.0 sin 41.5 1.333 air water n n θ θ = ° = = ° The depth of the tank is then ( ) 2 3.00 m 3.00 m 3.39 m tan tan 41.5
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