Explanation : Frequency modulation (FM) conveys information over a carrier wave by varying its instantaneous frequency. In amplitude modulation, it is the amplitude of the carrier that is varied while its frequency remains constant. Frequency modulation is also used in telemetry, radar, seismic prospecting and newborn EEG seizure monitoring. FM is widely used for broadcasting music and speech, two-way radio systems, magnetic tape-recording systems and some video-transmission systems. ....Read more