question_answer 12)

  A speech signal of 3 kHz is used to modulate a   carrier signal of frequency 1 MHz, using amplitude modulation. The frequencies of the side bands will be (a)1 .003 MHz and 0.997 MHz (fc) 3001 kHz and 2997 kHz (c) 1003 kHz and ,1000 kHz (d) 1 MHz and 0.997 MHz

Answer:

  (a) Here, Using amplitude modulation, the frequencies of the side band Thus option (a) is correct.