MHT CET202020 Oct 2020Morning ShiftPhysicsCommunication SystemActual
Modulation is a process of superposing
Options
- Alow frequency radio signal on low frequency audio waves.
- Bhigh frequency audio signal on low frequency radio waves.
- Clow frequency audio signal on high frequency radio waves.
- Dhigh frequency radio signal on low frequency audio signal.
Correct answer
C. low frequency audio signal on high frequency radio waves.
Step-by-step solution
Low frequency audio signal cannot be transmitted as such over long distances. Therefore. to overcome this difficulty, the low frequency audio signal is superposed on a high frequency wave (carrier wave). This process is called modulation.