Home Physics Communication System ( Not In Syllabus ) JEE (Main) / AIEEE Problems ( Previous Years ) Choose the correct statement :
Physics Communication System ( Not In Syllabus ) JEE (Main) / AIEEE Problems ( Previous Years ) MCQ (Single Correct)

Choose the correct statement :

A
In amplitude modulation the frequency of high frequency carrier wave is made to vary in proportion to the amplitude of the audio signal
B
In frequency modulation the amplitude of the high frequency carrier wave is made to vary in proportion to the amplitude of the audio signal.
C
In frequency modulation the amplitude of the high frequency carrier wave is made to vary in proportion to the frequency of the audio signal
D
In amplitude modulation the amplitude of the high frequency carrier wave is made to vary in proportion to the amplitude of the audio signal

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The correct answer is:
D

In amplitude modulation amplitude of carrier wave (high frequency) is varied in proportion to the amplitude of signal.

In frequency modulation frequency of carrier wave (high frequency) is varied in proportion to amplitude of signal.

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