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12th Class Physics Communication System / संचार तंत्र Question Bank Communication Systems Conceptual Problems

  • question_answer
    Why is the transmission of signals through a coaxial cable not possible for frequencies greater than \[\mathbf{20}\text{ }\mathbf{MHz}\]?                   

    Answer:

                    For frequencies greater than\[\text{2}0\text{ MHz}\], dielectric loss becomes quite high.


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