1) In amplitude modulation. sinusoidal carrier frequency used is denoted by ωc and the signal frequency is denoted by ωm . The bandwidth (Δωm) of the signal is such that Δωm << ωc . Which of the following frequencies is not contained in the modulated wave ? A) $\omega_{c}$ B) $\omega_{m}+\omega_{c}$ C) $\omega_{c}-\omega_{m}$ D) $\omega_{m}$ Answer: Option DExplanation:The frequency spectrum of the modulated wave is Clearly, ωm is not included in the spectrum.
