Ch33-p065 - 65(a No refraction occurs at the surface ab so the angle of incidence at surface ac is 90 For total internal reflection at the second

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65. (a) No refraction occurs at the surface ab , so the angle of incidence at surface ac is 90° – φ . For total internal reflection at the second surface, n g sin (90° – ) must be greater than n a . Here n g is the index of refraction for the glass and n a is the index of refraction for air. Since sin (90° – ) = cos , we want the largest value of for which n g cos n a . Recall that cos decreases as increases from zero. When has the largest value for which total internal reflection occurs, then
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This note was uploaded on 06/03/2011 for the course PHY 2049 taught by Professor Any during the Spring '08 term at University of Florida.

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