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
2005 kHz, and 1995 kHz
2005 kHz, 2000 kHz and 1995 kHz
2000 kHz and 1995 kHz
As we learnt in
Amplitude Modulation -
The amplitude of modulated wave is varied in accordance with the amplitude of modulating wave.
- wherein
Amplitude modulated wave consists of three freuencies are
i.e. 2005 KHz, 2000 KHz, 1995 KHz
Correct option is 3.
Option 1)
2 MHz only
This is an incorrect option.
Option 2)
2005 kHz, and 1995 kHz
This is an incorrect option.
Option 3)
2005 kHz, 2000 kHz and 1995 kHz
This is the correct option.
Option 4)
2000 kHz and 1995 kHz
This is an incorrect option.
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