Consider telecommunication through optical fibres. Which of the following statements is not true(a) Optical fibres may have homogeneous core with a suitable cladding(b) Optical fibres can be of graded refractive index(c) Optical fibres are subject to electromagnetic interference from outside(d) Optical fibres have extremely low transmission loss
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(c) Optical fibres are subject to electromagnetic interference from outside.
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Answer:
According to the question the answer is option "c) Optical fibers are subject to electromagnetic interference from outside. The reason for the answer is because there are no such optical fibers, which are made through the use elector magnets, only lights are passed through it.
Explanation:
When there are lights passing through a cable, there are no possibilities of interference between the signal by any kind of electromagnetic, this could only occur, when the signals are transmitted over the twisted pair cable, or any wired cable.
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