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(A) In amplitude modulation,the sideband frequencies are given by $(f_c + f_m)$ and $(f_c - f_m)$,where $f_c$ is the carrier frequency and $f_m$ is th

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$905 \ kHz, 895 \ kHz$

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(A) In amplitude modulation,the sideband frequencies are given by $(f_c + f_m)$ and $(f_c - f_m)$,where $f_c$ is the carrier frequency and $f_m$ is the message signal frequency.Given: $f_c = 900 \ kHz$ and $f_m = 5 \ kHz$.Upper Sideband $(USB)$ $= f_c + f_m = 900 \ kHz + 5 \ kHz = 905 \ kHz$.Lower Sideband $(LSB)$ $= f_c - f_m = 900 \ kHz - 5 \ kHz = 895 \ kHz$.Therefore,the sideband frequencies are $905 \ kHz$ and $895 \ kHz$.

In amplitude modulation,if a message signal of $5 \ kHz$ is modulated by a carrier wave of frequency $900 \ kHz$,then the frequencies of the side bands are

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