In optic fiber transmission the repeater are separated through a distance of __________ km in newer system?
Correct answer: C. 100km
- A. 300km
- B. 200km
- C. 100km
- D. 20km
Explanation
In newer optical-fibre communication systems, repeaters can commonly be spaced about 100 km apart because the signal suffers relatively low attenuation in fibre. The likely alternative is 20 km, which relates more closely to older systems or shorter repeater spacing and does not represent the newer system stated here.
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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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