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Consider the following statements with respect to communication through optical fibers:
1. It works using the principle of total internal reflection of light.
2. Electromagnetic interference does not occur while transmitting information over fiber optic cable.
3. It permits higher bandwidth and transmission over long distances compared to copper cables.
Which of the statements given above is/are correct?
  • a)
    2 only
  • b)
    3 only
  • c)
    1 and 3 only
  • d)
    1, 2 and 3
Correct answer is option 'D'. Can you explain this answer?
Verified Answer
Consider the following statements with respect to communication throug...
  • A fiber-optic cable is made up of incredibly thin strands of glass or plastic known as optical fibers; one cable can have as few as two strands or as many as several hundred. Fiber-optic cables carry information between two places using entirely optical (light-based) technology.
  • How fiber-optics works:
    - Light travels down a fiber-optic cable by bouncing repeatedly off the walls. Each tiny photon (particle of light) bounces down the pipe like a bobsleigh going down an ice run. Now you might expect a beam of light, traveling in a clear glass pipe, simply to leak out of the edges. But if the light hits the glass at a really shallow angle (less than 42 degrees), it reflects back in again—as though the glass were really a mirror. This phenomenon is called total internal reflection. Hence statement 1 is correct.
  • The optical fiber is electrically non-conductive, so it does not act as an antenna to pick up electromagnetic signals. Electromagnetic Interference does occur in coaxial cables since current does cut across the conductor. Fiber optics are immune to this interference since signals are transmitted as light instead of current. Hence statement 2 is correct.
  • The main advantage of optical fiber communication over electrical cable transmission is its high bandwidth capability (almost 10Gps) over long distances due to the extremely low loss at the same specific wavelengths. Lightweight copper cable, by contrast, has very high losses at high frequencies. Hence statement 3 is correct.
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Consider the following statements with respect to communication through optical fibers:1. It works using the principle of total internal reflection of light.2. Electromagnetic interference does not occur while transmitting information over fiber optic cable.3. It permits higher bandwidth and transmission over long distances compared to copper cables.Which of the statements given above is/are correct?a)2 onlyb)3 onlyc)1 and 3 onlyd)1, 2 and 3Correct answer is option 'D'. Can you explain this answer?
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Consider the following statements with respect to communication through optical fibers:1. It works using the principle of total internal reflection of light.2. Electromagnetic interference does not occur while transmitting information over fiber optic cable.3. It permits higher bandwidth and transmission over long distances compared to copper cables.Which of the statements given above is/are correct?a)2 onlyb)3 onlyc)1 and 3 onlyd)1, 2 and 3Correct answer is option 'D'. Can you explain this answer? for UPSC 2024 is part of UPSC preparation. The Question and answers have been prepared according to the UPSC exam syllabus. Information about Consider the following statements with respect to communication through optical fibers:1. It works using the principle of total internal reflection of light.2. Electromagnetic interference does not occur while transmitting information over fiber optic cable.3. It permits higher bandwidth and transmission over long distances compared to copper cables.Which of the statements given above is/are correct?a)2 onlyb)3 onlyc)1 and 3 onlyd)1, 2 and 3Correct answer is option 'D'. Can you explain this answer? covers all topics & solutions for UPSC 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Consider the following statements with respect to communication through optical fibers:1. It works using the principle of total internal reflection of light.2. Electromagnetic interference does not occur while transmitting information over fiber optic cable.3. It permits higher bandwidth and transmission over long distances compared to copper cables.Which of the statements given above is/are correct?a)2 onlyb)3 onlyc)1 and 3 onlyd)1, 2 and 3Correct answer is option 'D'. Can you explain this answer?.
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