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Wave Optics
Question
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A message signal has a bandwidth of 5 MHz, suggest a possible communication channel for its transmission.

Answer

The best mode of communication channel in this case is a twisted pair cable. 

Twisted pair cables consists of pairs of plastic-coated copper wires that are twisted together.

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Some More Questions From Wave Optics Chapter

Which of the following frequencies will be suitable for beyond-the-horizon communication using sky waves?

Frequencies in the UHF range normally propagate by means of

Digital signals
(i)    do not provide a continuous set of values,
(ii)    represent values as discrete steps,
(iii)    can utilize binary system, and
(iv)    can utilize decimal as well as binary systems.
Which of the above statements are true?

What is space wave propagation?