High frequency waves are

The wavelength range of SHF ( super high frequency) waves is

The process of superimposing a low frequency signal on a high frequency wave is "_________" .

The Process of superimposing message signal on high frequency wave is called

In communication system, the process of superimposing a low frequency signal on a high frequency wave is known as

In communication system, the process of superimposing a low frequency signal on a high frequency wave is known as

The process of variation of some characteristic of a high frequency wave (i.e., carrier wave) in accordance with the instantaneous value of an audio signal is called

Modulation is the phenomenon of superimposing the low audio frequency base band message or information signals ( called the modulation signals) on a high frequency wave (called, the carrier wave). The resultant wave is called the modulated wave, which is transmitted. Read the above passage and answer the following questions: (i) What are the Audio Frequency and Radio Frequency ranges? (ii) Why audio frequency signals, as such cannot be transmitted over long distance? (iii) What does the phenomemom imply in day to day life ?

High frequency sound waves vibrate the basilar membrane