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Wave Optics
Question
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Complete the following block diagram depicting the essential elements of a basic communication system.



Name the two basic modes of communication. Which of these modes is used for telephonic communication?

Answer

The block diagram is given below:



The two basic modes of transmission are:

(i) Point to point: Communication takes place over a link between a single transmitter and receiver.
(ii) Broadcast mode: Transmission of signals take place over a large number of receivers corresponding to a single transmitter. 

For telephonic conversation, point to point mode of communication is used. 

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(ii)    represent values as discrete steps,
(iii)    can utilize binary system, and
(iv)    can utilize decimal as well as binary systems.
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