Answered: Example 7: During the investigation of… | bartleby

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Example 7: During the investigation of a new type of optical fiber
having an index of refraction n = 1.21, a laser beam is aimed at
the flat end of a straight fiber, as shown in the figure. What is the
maximum angle of incidence 01 if the beam is not to escape from
the sides of the fiber if it is surrounded by air?

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