27_Chapter 22 HomeworkCH22 Reflection and Refraction of Light

27_Chapter 22 HomeworkCH22 Reflection and Refraction of Light

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Reflection and Refraction of Light 259 22.54 From the sketch at the right, observe that the angle of incidence at A is the same as the prism angle at point O . Given that 60.0 θ , application of Snell’s law at point A gives ( ) 1.50sin 1.00 sin60.0 β 35.3 or = ° From triangle AOB , we calculate the angle of incidence and reflection, γ , at point B : ( ) ( ) 90.0 90.0 180 + ° = ° or 60.0 35.3 24.7 θβ = −= ° ° = ° Now, we find the angle of incidence at point C using triangle BCQ : ( ) ( ) ( ) 90.0 90.0 90.0 180 δθ °− + ° ( + = ° or ) 90.0 90.0 84.7 5.26 δ θγ + = ° ° − =° Finally, application of Snell’s law at point C gives ( ) ( ) ( ) 1.00 sin 1.50 sin 5.26 φ = ° or () 1 sin 1.50sin5. 26 = 7.91 ° ± ²³ ´ µ ± ± ² ³³ ´ µ 9±²±³´µ´ ± 22.55 The path of a light ray during a reflection and/or refraction process is always
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This document was uploaded on 10/20/2011.

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