Q117 / 150 · MHT CET 2020 (20 Oct Shift 1) · Physics

Modulation is a process of superposing

  • A
    low frequency radio signal on low frequency audio waves.
  • B
    high frequency audio signal on low frequency radio waves.
  • Correct answer
    C
    low frequency audio signal on high frequency radio waves.
  • D
    high frequency radio signal on low frequency audio signal.

Solution

Low frequency audio signal cannot be transmitted as such over long distances. Therefore. to overcome this difficulty, the low frequency audio signal is superposed on a high frequency wave (carrier wave). This process is called modulation.

Hence, the correct answer is option: 'C'.

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