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Question 20221
JEE Physics · Medium

Principles of Communication: Modulation MCQ

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ModulationMediumQuestion 20221

Question

In frequency modulation (FM), which parameter of the carrier wave changes?
  1. A
    Amplitude
  2. B
    Speed
  3. C
    Frequency
    Correct
  4. D
    Wavelength in vacuum

Correct answer

Frequency

Explanation

FM: carrier frequency deviates around its centre frequency in proportion to the message amplitude. The carrier amplitude stays constant, making FM less susceptible to amplitude noise.

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