NTA Abhyas JEE Main2020PhysicsCommunication SystemPractice
Amplitude modulation is the process of
Options
- Asuperimposing a high frequency signal on a low frequency carrier signal
- Bsuperimposing a low frequency signal on a high frequency carrier signal
- Csingle sideband communication
- Damplitude shift and phase shift
Correct answer
B. superimposing a low frequency signal on a high frequency carrier signal
Step-by-step solution
Modulation is the phenomenon of superimposing a low audio frequency information signals (called the modulation signals) on a high-frequency wave (called, the carrier wave). When we modulate the amplitude of the carrier wave to transmit the information, it is known as amplitude modulation.