In amplitude modulation,

In amplitude modulation,
  1. both amplitude and frequency do not change according to information signal.
  2. amplitude remains constant but frequency changes according to information signal.
  3. both amplitude and frequency change according to information signal.
  4. amplitude of carrier wave changes according to information signal.

Solution

amplitude of carrier wave changes according to information signal *

Asked in: MHT CET 2020 (16 Oct Shift 1)

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