Asked Mar 27, 2019

The following figure shows a ray of light entering one end of an optical fiber at an angle of incidence θi = 49.5°. The index of refraction of the fiber is 2.04. Find the angle θ the ray makes with the normal when it reaches the curved surface of the fiber.   


Expert Answer

Step 1

Equation for index of refraction of fiber is,

Step 2

α is the angle of refraction at the air-core interface.

Substituting the values,

Step 3

Rewrite the expressio...


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