An optical fiber made of glass with an index of refraction 1.50 that is coated with a material with index of refraction 1.30 has a critical angle of
A)90°.
B)41.8°.
C)60.0°.
D)50.2°.
E)This combination will not work.

Question

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The Answer of An optical fiber made of glass with an index of refraction 1.50 that is coated with a material with index of refraction 1.30 has a critical angle of
A)90°.
B)41.8°.
C)60.0°.
D)50.2°.
E)This combination will not work.

An Optical Fiber Made of Glass with an Index of Refraction