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Zolol [24]
3 years ago
12

A fiber-optic rod consists of a central strand of material surrounded by an outer coating. The interior portion of the rod has a

n index of refraction of 1.97. If all rays striking the interior walls of the rod with incident angles greater than 50.4° are subject to total internal reflection, what is the index of refraction of the coating?
Physics
1 answer:
matrenka [14]3 years ago
6 0

Answer:

The refractive index of the outer coating is 1.52.

Explanation:

Refractive index of interior part, n' = 1.97

critical angle, C = 50.4°

Let the refractive index of the coating is n.

Use the Snell's law,  

n\times sin r = n'\times sinC\\\\n\times sin 90 = 1.97 \times sin 50.4\\\\n = 1.52

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