Schaum's Outline of College Physics, Twelfth Edition (Schaum's Outlines)
Schaum's Outline of College Physics, Twelfth Edition (Schaum's Outlines)
12th Edition
ISBN: 9781259587399
Author: Eugene Hecht
Publisher: McGraw-Hill Education
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Chapter 37, Problem 25SP

A block of polystyrene is covered by a thick layer of water. A narrow beam of light in the plastic arrives at the plastic-water interface at the smallest angle such that all the light is reflected back into the polystyrene. Determine that angle. [Hint: Study Eq. (37.4) and Table 37-1.]

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10 mW of light is incident on a piece of GaAs which is 0.2mm thick. The incident light is a mixture of 5mW at A1=1.553µm and 5mW at 12=0.828um. A total of 7mW mixed light exits out of the GaAs. Assume no reflections at the air/GaAs interface and any light generated by recombination won't exit the GaAs. What are the absorption coefficients, a, for two different wavelengths?
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