A Fiber Optic Is Made by Cladding a Thin Fiber

question 69

Multiple Choice

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, Ɵ_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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A medical condition, also known as dyspareunia, where individuals experience discomfort or pain during sexual intercourse.

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A marked delay in or inability to ejaculate, usually during partnered sexual activity.

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The act of providing or receiving sexual pleasure through the mouth.

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The movement of bodies while the penis is in the vagina. Sometimes also called vaginal intercourse or penile-vaginal intercourse. Sometimes penile-anus behavior is considered sexual intercourse.