If a signal of frequency 3 kHz is to be tran | vedclass

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(D) In amplitude modulation,the carrier wave frequency $(f_c)$ must be significantly higher than the modulating signal frequency $(f_m)$ to ensure eff

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$3 \ MHz$

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(D) In amplitude modulation,the carrier wave frequency $(f_c)$ must be significantly higher than the modulating signal frequency $(f_m)$ to ensure efficient transmission and to avoid overlapping of sidebands.Given,$f_m = 3 \ kHz = 3000 \ Hz$.Comparing the given options,$30 \ Hz$,$300 \ Hz$,and $3000 \ Hz$ are either less than or equal to the signal frequency.$3 \ MHz = 3000 \ kHz$ is much greater than $3 \ kHz$.Therefore,the carrier frequency must be $3 \ MHz$.

If a signal of frequency $3 \ kHz$ is to be transmitted via amplitude modulation,which of the following should be chosen as the carrier wave frequency?

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