JEE PHYSICS MCQ: COMMUNICATION SYSTEMS

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Sinusoidal carrier voltage of frequency 1.5 MHz and amplitude 50 V is amplitude modulated by sinusoidal voltage of frequency 10 kHz producing 50% modulation. The lower and upper side-band frequencies in kHz are

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Correct option: A

1490, 1510

Option A (1490, 1510) is correct because the lower and upper sideband frequencies are calculated by subtracting and adding the modulating frequency to the carrier frequency, respectively.

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