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The glass core of an optical fiber has an index of refraction of 1.60. The index of refraction of the cladding is 1.43.

What is the maximum angle a light ray can make with the wall of the core if it is to remain inside the fiber?

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Answer:

The answer is given in the picture.

Hope it helps...

The glass core of an optical fiber has an index of refraction of 1.60. The index of-example-1
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User Nabil Djarallah
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