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Introduction to Optical Fiber – 1 – 1

1. The basic principle involved in light transmission through a fiber optic link is :

(a) total internal reflection
(b) polarization
(c) diffraction
(d) refraction

Answer
Answer : (a)

Explanation
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2. The band of light wavelengths that are too long to be seen by the human eye :

(a) amber
(b) visible
(c) infrared
(d) ultraviolet

Answer
Answer : (c)

Explanation
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3. The speed of light is :

(a) 300,000,000 mi/s
(b) 300,000,000 mm/s
(c) 300,000,000 m/s
(d) 300,000,000 km/s

Answer
Answer : (c)

Explanation
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4. The wavelength of visible light extends from :

(a) 0.8 to 1.0 nm
(b) 400 to 750 nm
(c) 200 to 660 nm
(d) 700 to 1200 nm

Answer
Answer : (b)

Explanation
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5. The main benefit of light-wave communications over microwaves or any other communications media is :

(a) lower cost
(b) better security
(c) wider bandwidth
(d) freedom from interference

Answer
Answer : (c)

Explanation
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