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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 n<sub>1</sub> = 1.45 with a material of refractive index n<sub>2</sub> = 1.38. What is the critical angle, Ɵ<sub>c</sub>, at the core-cladding interface? A) 44º B) 46º C) 55º D) 72º E) None of these is correct. 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, Ɵc, at the core-cladding interface?


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

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