Question

# Choose the correct statement. In amplitude modulation, the amplitude of the high frequency carrier wave is made to vary in proportion to the amplitude of the audio signal.In amplitude modulation, the frequency of the high frequency carrier wave is made constant.In frequency modulation, the amplitude of the low frequency carrier wave is made to vary in proportion to the amplitude of the audio signal. None of the above.

Solution

## The correct option is A In amplitude modulation, the amplitude of the high frequency carrier wave is made to vary in proportion to the amplitude of the audio signal.In amplitude modulation, the amplitude of the carrier wave is made to vary in proportion to the amplitude of the message signal. In frequency modulation, the frequency of the carrier wave is made to vary in proportion to the amplitude of the message signal.

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