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Unformatted text preview: refraction are n 1 = 1 . 60, n 2 = 1 . 40, and n 3 = 1 . 20. (a) What is angle ? (b) If is increased, is there refraction of light into material 3? Since the light is incident at the critical angle in material 2, the angle with respect to the normal in material 2 must be = arcsin n 3 n 2 We need to relate this to the angle with respect to the normal at the interface between 1 and 2. Since these two interfaces are at right angles to each other, we can use that fact that the 3 angles of a triangle sum to 180 . Hence, the angle with respect to the normal at the other interface is 2 = 90  c = 90 arcsin n 3 n 2 60...
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This note was uploaded on 12/05/2011 for the course PHY 2049 taught by Professor Any during the Spring '08 term at University of Florida.
 Spring '08
 Any
 Physics

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