Use the Following Figure Below for the Next Problem $\theta$ _c,at the Core-Cladding Interface?
A)44º
B)46º
C)55º
D)72º
E)None of

question 47

Multiple Choice

Use the following figure below for the next problem.
The figure shows a cross-
-A fiber optic is made by cladding a thin fiber core of refractive index n₁ = 1.45 with a material of refractive index n₂ = 1.38.What is the critical angle, $\theta$ _c,at the core-cladding interface?

• A)44º
• B)46º
• C)55º
• D)72º
• E)None of these is correct.

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Definitions:

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