JEE Main & Advanced JEE Main Paper (Held on 09-4-2019 Morning)

  • question_answer A signal \[A\cos \omega t\] is transmitted using \[{{\text{v}}_{\text{0}}}\sin {{\omega }_{0}}t\] as carrier wave. The correct amplitude modulated (AM) signal is : [JEE Main 9-4-2019 Morning]

    A) \[{{\text{v}}_{\text{0}}}\sin {{\omega }_{0}}t+A\cos \omega t\]

    B) \[{{\text{v}}_{\text{0}}}\sin {{\omega }_{0}}t+\frac{A}{2}sin({{\omega }_{0}}-\omega )t+\frac{A}{2}\sin ({{\omega }_{0}}+\omega )t\]

    C) \[\text{(}{{\text{v}}_{\text{0}}}+A)cos\omega t\sin {{\omega }_{0}}t\]

    D) \[{{\text{v}}_{\text{0}}}sin[{{\omega }_{0}}(1+0.01A\,sin\omega t)t]\]

    Correct Answer: B

    Solution :

    Option [b]

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