The main function of the mouth of a telephone is to convert sound energy into
Answer Details
The main function of the mouth of a telephone is to convert sound energy into electrical energy. When a person speaks into the mouthpiece of a telephone, the sound waves from their voice cause a diaphragm inside the microphone to vibrate. This vibration is then converted into an electrical signal, which is transmitted through the telephone wires to the receiver at the other end. The receiver then converts the electrical signal back into sound waves, which can be heard by the person on the other end of the line. Therefore, the mouth of a telephone does not convert sound energy into heat, light, chemical, or mechanical energy, but rather into electrical energy.