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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

Options

  1. A1490,1510
  2. B1510,1490
  3. C1 1490 , 1 1510
  4. D1 1510 , 1 1490

Correct answer

A. 1490,1510

Step-by-step solution

Here f_ c =1.5 MHz =1500 kHz , f_ m =10 kHz Lower side-band frequency =f_ c -f_ m =1500 kHz -10 kHz =1490 kHz Upper side-band frequency =f_ c +f_ m =1500 kHz +10 kHz =1510 kHz

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