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JEE Main2014PhysicsCommunication SystemActual

Long-range radio transmission is possible when the radio waves are reflected from the ionosphere. For this to happen the frequency of the radio waves must be in the range:

Options

  1. A150 - 500   kHz
  2. B80 - 150   MHz
  3. C1 - 3   MHz
  4. D8 - 25   MHz

Correct answer

D. 8 - 25   MHz

Step-by-step solution

Skywaves get reflected from the ionosphere having frequency 3   MHz to 40   MHz .

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