Question

A message signal of frequency ${\omega }_0$ is superposed on a carrier wave of frequency ${\omega }_e$ to get an amplitude mediated wave (AM).The frequency of the AM wave will be

• A. ${\omega }_m$
• B. ${\omega }_e$
• C. $\frac{{\omega }_e+{\omega }_m}{2}$
• D. $\frac{{\omega }_e-{\omega }_m}{2}$

Answer 1

Answer: (B)

${\omega }_e$

In amplitude modulation the amplitude of the carrier wave varies according to the amplitude of the audio frequency modulating signal while the frequency of amplitude modulated wave remains same as that of the carrier wave $\left({\omega }_e\right)$.