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JEE Main & Advanced Physics Communication System / संचार तंत्र Question Bank Self Evaluation Test - Communication System

  • question_answer
    If \[{{E}_{c}}=20\,\sin \,{{10}^{5}}\pi t\] and \[{{E}_{m}}=10\,\sin \,400\,\pi t\] are carrier and modulating signals, the modulation index is:

    A) \[56\,%\]

    B) \[30\,%\]

    C) \[50\,%\]

    D) \[48\,%\]

    Correct Answer: C

    Solution :

    [c] Modulation index \[=\frac{10}{20}=0.5=50%\]


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