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Question 20253
JEE Physics · Medium

Principles of Communication: Modulation MCQ

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ModulationMediumQuestion 20253

Question

In which modulation technique does the carrier amplitude remain constant?
  1. A
    Amplitude Modulation
  2. B
    Double Sideband Suppressed Carrier
  3. C
    Frequency Modulation
    Correct
  4. D
    Pulse Amplitude Modulation

Correct answer

Frequency Modulation

Explanation

In FM, only the instantaneous frequency varies; amplitude is constant. This makes FM resistant to amplitude-type noise (rain fade, ignition interference) compared to AM.

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