JEE Main 2016 · 3 Apr · Shift 1 · Physics Q24

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PhysicsSingle correct+4 / -1Question 24 of 90

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 to vary in proportion to the amplitude of the audio signal.

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

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

Answer and worked solution

Official answer: A

In amplitude modulation the carrier's amplitude follows the amplitude of the audio signal. (In frequency modulation it is the carrier's frequency that varies.)

Topics:Modulation

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JEE Main 2016 · 3 Apr · Shift 1, Physics question 24