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Question: Answered & Verified by Expert
A message signal of frequency $\omega_{\mathrm{m}}$ is superposed on a carrier wave of frequency $w_c$ to get Amplitude Modulated Wave (AM). The frequency of the AM wave will be
PhysicsCommunication System
Options:
  • A
    $\omega_{\mathrm{m}}$
  • B
    $\omega_{\mathrm{c}}$
  • C
    $\frac{\omega_{\mathrm{c}}+\omega_{\mathrm{m}}}{2}$
  • D
    $\frac{\omega_{\mathrm{c}}-\omega_{\mathrm{m}}}{2}$
Solution:
1871 Upvotes Verified Answer
The correct answer is:
$\omega_{\mathrm{c}}$
As we know that in amplitude modulation, the frequency of modulated wave is equal to the frequency of carrier wave.
Here, the frequency of carrier wave is $\omega_{\mathrm{c}}$.
So the amplitude modulated wave also has frequency $\omega_c$.

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