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GATE ECE 2002 | Question: 1.19

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A $1 \; \mathrm{MHz}$ sinusoidal carrier is amplitude modulated by a symmetrical square wave of period $100 \; \mu \mathrm{sec}$. Which of the following frequencies will NOT be present in the modulated signal?

  1. $990 \; \mathrm{kHz}$
  2. $1010 \; \mathrm{kHz}$
  3. $1020 \; \mathrm{kHz}$
  4. $1030 \; \mathrm{kHz}$
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