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Find the odd one out. (a)Radio

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in Physics – Class 12 by (135k points)
Find the odd one out.

(a) Radio

(b) Telephone

(c) Television

(d) Computer networking

The question was posed to me in unit test.

My enquiry is from Elements of a Communication System topic in section Communication Systems of Physics – Class 12

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Right option is (b) Telephone

Explanation: The telephone is the odd one out. Telephones belong to the category of point-to-point communication, whereas all the others belong to the broadcast mode of communication. In point-to-point communication mode, communication takes place over a link between a single transmitter and a receiver. In broadcast mode, there are a large number of receivers corresponding to a single transmitter.

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