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JEE Main · 2022 · 25 Jun 2022 · Shift 1 · EM Waves

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A signal of 100 THz frequency can be transmitted with maximum efficiency by:
  1. (A)Coaxial cable
  2. (B)Optical fibre✓ Correct
  3. (C)Twisted pair of copper wires
  4. (D)Water

Answer: (B)

Solution

Optical fibres are designed to transmit electromagnetic signals in the frequency range of 1 THz to 1000 THz, which includes the visible and near-infrared spectrum. A signal of 100 THz falls within this range, making optical fibre the most efficient transmission medium for this frequency.

JEE Main · 2022 · 25 Jun 2022 · Shift 1 · Single correct option

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