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JEE Main & Advanced Physics Communication System / संचार तंत्र Question Bank Critical Thinking

  • question_answer
    The audio signal used to modulate 60 sin (2p ´ 106 t) is \[15\sin 300\pi t.\]The depth of modulation is 

    A)            50%                                          

    B)            40%

    C)            25%                                          

    D)            15%

    Correct Answer: C

    Solution :

               \[{{m}_{a}}=\frac{{{E}_{m}}}{{{E}_{c}}}=\frac{15}{60}\times 100=25%\]


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