Consider telecommunication through optical fibers. Which of the following statements is not true

Optical fibers may have homogeneous core with a suitable cladding

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Optical fibers can be of graded refractive index

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Optical fibers are subject to electromagnetic interference from outside

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Optical fibers have extremely low transmission loss

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Solution

The correct option is C Optical fibers are subject to electromagnetic interference from outside
Optical fibers are not subjected to electromagnetic interference from outside.

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Which of the following is not a telecommunication device?

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