In amplitude modulation, the message signal $ V_{\mathrm{m}}(t)=10 \sin \left(2 \pi \times 10^{5} t\right) $ volts and carrier signal $ V_{\mathrm{C}}(t)=20 \sin \left(2 \pi \times 10^{7} t\right) $ volts. The modulated signal now contains the message signal with lower side band and upper side band frequency, therefore the bandwidth of modulated signal is $ \alpha \mathrm{kHz} $. The value of $ \alpha $ is:

Question

In amplitude modulation, the message signal $ V_{\mathrm{m}}(t)=10 \sin \left(2 \pi \times 10^{5} t\right) $ volts and carrier signal $ V_{\mathrm{C}}(t)=20 \sin \left(2 \pi \times 10^{7} t\right) $ volts. The modulated signal now contains the message signal with lower side band and upper side band frequency, therefore the bandwidth of modulated signal is $ \alpha \mathrm{kHz} $. The value of $ \alpha $ is:, $ 200 \mathrm{kHz} $, $ 500 \mathrm{kHz} $, $ 100 \mathrm{kHz} $, $ 0 $

MARKS App · Accepted Answer

Bandwidth = 2 × f m = 2 × 10 5 Hz = 200 kHz

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