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Question

In fiber optics the attenuation of light through glass depends on the

A
Wave length of light
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B
Frequency of light
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C
Speed of light
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D
All of the above
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Solution

The correct option is A Wave length of light

In fiber optics the attenuation of light through glass depends on the wavelength of light.

Light traveling in an optical fiber loses power over distance. The loss of power depends on the wavelength of the light and on the propagating material. For silica glass, the shorter wavelengths are attenuated the most.

Attenuation In optical fibers:-

In optical fibers, attenuation is the rate at which the signal light decreases in intensity. For this reason, glass fiber is used for long-distance fiber optic cables; plastic fiber has a higher attenuation and, hence, shorter range.



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