A message signal of frequency $$100$$ MHz and peak voltage $$100$$ V is used to execute amplitude modulation on a carrier wave of frequency $$300$$ GHz and peak voltage $$400$$ V . The modulation index and difference between the two side band frequencies are

Question

Infinity Learn · Accepted Answer

Given  :  $$fm=100MHz=100$$×$$106Hz$$ , fc $$=$$ $$300$$ GHz                 $$Am=100V$$,     $$Ac=400V$$   We know that, Range of frequency in case of Amplitude modulation is (fc$$−$$fm)  to (fc+fm) . ∴ Band $$width=2fm$$ $$=$$ $$=2$$×$$100$$×$$106Hz$$ $$=$$ $$=2$$×$$108Hz$$  and   Modulation Index  $$=$$ AmAc  $$=$$ $$100400$$ $$=$$ $$0.25$$

A message signal of frequency 100 MHz and peak voltage 100 V is used to execute amplitude modulation on a carrier wave of frequency 300 GHz and peak voltage 400 V . The modulation index and difference between the two side band frequencies are

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