Question

The part of the telephone instrument which is placed in front of the mouth and collects sound and then propagates the information in the form of electromagnetic waves is called:
(A)Mouth Piece
(B)Receiver
(C)Cable Wire
(D)none of the above

Answer 1

In this question,we are going to understand the mouthpiece, receiver, and cable Wire.We are going to understand its application and then compare it in order to reach the correct answer.

Complete step by step answer:
Mouthpiece: The job of the mouthpiece is it will collect the sound created by vibrations by the transmitter and then vibrations are converted to electromagnetic waves and are made propagation in the form of electromagnetic waves. The use of mouthpiece is the same as the use given in the question.
Receiver: The job of the receiver is it will collect the incoming electromagnetic waves and then it will convert the electromagnetic waves into the sound which we can hear and understand. Finally, the receiver gives the output and ends the process. If the receiver is not present we can’t hear the sound even if the sender is talking.
Cable Wire: The job of a cable wire is to connect the device and the person who is using it. It is just like a medium used for propagation. If the wire is not connected properly the sound will not propagate from the device to the user using it. Cable wires are of many types.
Therefore Option (A) is the correct answer.

Note: Transmitter and receiver are considering a pair of devices working with each other. Both of these devices are used in the signal transmission process as an end to end device. Even though the transmitter and receiver are used for the same purpose, there are some differences between them. A transmitter is a device that gathers information from many devices and decodes that information. The data will be sent to another in a long data transmission process. Similarly, the definition of the receiver explains that it is a device that gathers decoded information from the network and encodes the same. After completion of the encoding process, the data will be displayed to the users.