(i) Draw the plot of amplitude versus ω for an amplitude modulated wave whose carrier wave (ω > ωc) is carrying two modulating signals, ω1 and ω2(ω2> ω1). (ii) Is the plot symmetrical about ωc? Comment especially about plot in region (ω < ωc ). (iii) Extrapolate and predict the problems one can expect if more waves are to be modulated. (iv) Suggest solutions to the above problem. In the process can one understand another advantage of modulation in terms of bandwidth?

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Physics NCERT Exemplar Solutions Class 12th Chapter Fifteen Physics Class 12th Communication Systems

(i) Draw the plot of amplitude versus ω for an amplitude modulated wave whose carrier wave (ω > ω_c) is carrying two modulating signals, ω1 and ω₂(ω₂> ω₁).
(ii) Is the plot symmetrical about ω_c? Comment especially about plot in region (ω < ω_c ).
(iii) Extrapolate and predict the problems one can expect if more waves are to be modulated.
(iv) Suggest solutions to the above problem. In the process can one understand another advantage of modulation in terms of bandwidth?

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alok kumar singh | Contributor-Level 10

4 months ago

This is a Long Answer Type Questions as classified in NCERT Exemplar

in first case crowding spectrum is visible

If we want more wave to be modulated then more crowding will occur and more mixing up of signal.

But we want to accommodate this we use higher band width and frequency career wave

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