In optic fiber transmission system _____________ are used regenerate the dim light signal?
Correct answer: B. Repeaters
- A. Diodes
- B. Repeaters
- C. Laser
- D. Transformer
Explanation
Repeaters receive weakened optical signals, amplify or regenerate them, and send fresh signals into the next section of fibre. This compensates for attenuation over long distances. The likely mistake is choosing a laser, because lasers generate the original light signal but do not by themselves regenerate a weakened signal along the cable.
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About Optics
Light is studied through reflection, refraction, dispersion, interference, diffraction and polarization, linking ray behavior with its wave nature. Questions may involve mirrors, lenses, optical instruments, refractive index and image formation, while geometrical optics deals with rays and wave optics explains effects such as interference and diffraction.
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