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Which of the following is not a medium of transmission?

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in Physics – Class 12 by (135k points)
Which of the following is not a medium of transmission?

(a) Microwave system

(b) Wire

(c) Free space

(d) Fiber optic cable

The question was posed to me in an international level competition.

The query is from Communication Systems topic in portion Communication Systems of Physics – Class 12

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Best answer
Correct option is (a) Microwave system

For explanation I would say: Microwave System is not a transmission medium. Instead, it is used for the transmission of data over a cable as well as lines. All the others are commonly used transmission media. Coaxial cable is a widely used wire medium, which offers a bandwidth of approximately 750 MHz.

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