A signal of 5 kHz frequency is amplitude modulated on a carrier wave of frequency 2 MHz. the frequencies of the resultant signal is/are:

2 MHz only

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2005 kHz, 2000 kHz and 1995 kHz

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2005 kHz, and 1995 kHz

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2000 kHz and 1995 kHz

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Solution

The correct option is B
2005 kHz, 2000 kHz and 1995 kHz

The signal frequency which is modulated is f_m = 5 kHz

The carrier wave frequency is f_c = 2 MHz = 2000 kHz

We know that the resultant signal will have frequencies given by f_c + f_m, f_c and f_c – f_m

Hence, we get

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A signal of 5 kHz frequency is amplitude modulated on a carrier wave of frequency 2 MHz. the frequencies of the resultant signal is/are:

The correct option is B 2005 kHz, 2000 kHz and 1995 kHz The signal frequency which is modulated is fm = 5 kHz The carrier wave frequency is fc = 2 MHz = 2000 kHz We know that the resultant signal will have frequencies given by fc + fm, fc and fc – fm Hence, we get

The correct option is B
2005 kHz, 2000 kHz and 1995 kHz

The signal frequency which is modulated is f_m = 5 kHz

The carrier wave frequency is f_c = 2 MHz = 2000 kHz

We know that the resultant signal will have frequencies given by f_c + f_m, f_c and f_c – f_m

Hence, we get