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easyMCQAIEEE 20032026Physics
1 mark

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

  1. A
    Optical fibres can be of graded refractive index.
  2. B
    Optical fibres are subject to electromagnetic interference from outside.
  3. C
    Optical fibres have extremely low transmission loss.
  4. D
    Optical fibres may have homogeneous core with a suitable cladding.

Solution & Step-by-step Explanation

Optical fibres are made of dielectric materials (glass or plastic), which do not conduct electricity. Therefore, they are immune to electromagnetic interference (EMI) from external sources. Statement (B) is false.

Practice this question

Try it yourself before checking the explanation above.

Consider telecommunication through optical fibres. Which of the following statements is not true?
A
Optical fibres can be of graded refractive index.
B
Optical fibres are subject to electromagnetic interference from outside.
C
Optical fibres have extremely low transmission loss.
D
Optical fibres may have homogeneous core with a suitable cladding.

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