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Consider the following statements:

1. Fiber optics is based on the principle of total internal reflection.

2. In an optical fiber communication system, power consumption is extremely low.

3. In India, Reliance Group of Industries is engaged in the manufacture of optical fiber.

4. Optical fiber communications are free from radio frequency interference.

Which of the following statements is/are correct?


1. 1, 2 and 3
2. 1, 2 and 4
3. Only 1 and 3
4. 4 only
5. None of the above/More than one of the above

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Correct Answer - Option 2 : 1, 2 and 4

The correct answer is 1,2 and 4.

  • Optical fiber is the technology partnered with data transmission using light pulses traveling along with a long fiber which is usually made of plastic or glass.
  • Metal wires are upgraded for transmission in optical fiber communication as signals travel with lesser damages.
  • These are based on the principle of total internal reflection. Hence statement 1 is correct.
  • An optical fiber is a flexible, transparent fiber made by constructing a glass or plastic to a diameter slightly thicker than that of a human hair. Hence statement 2 is correct.
  • Major companies operating in India under the optical fiber cables market include Sterlite Technologies Limited, Himachal Futuristic Communications Ltd., Aksh OptiFiber Limited, Finolex Cables Limited, Birla Cables Limited, Vindhya Telelinks Limited, UM Cables Limited, Uniflex Cables Limited, West Coast Optilinks. Hence statement 3 is incorrect.
  • Optical fiber communications are liberated from radio frequency interference. Hence statement 4 is correct.

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