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A Fiber Optic Is Made by Cladding a Thin Fiber

Question 126

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 maximum incident angle, Ɵ, so that the light ray is totally internally reflected inside the fiber? A) 24.1º B) 26.4º C) 28.2º D) 30.3º E) 32.7º 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 maximum incident angle, Ɵ, so that the light ray is totally internally reflected inside the fiber?


A) 24.1º
B) 26.4º
C) 28.2º
D) 30.3º
E) 32.7º

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