2. Questions Bank
  3. JEE Main & Advanced
  4. Physics
  5. Communication System / संचार तंत्र

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

  • question_answer
    A sinusoidal carrier voltage of frequency \[10\text{ }MHz\] and amplitude 200 volts is amplitude modulated by a sinusoidal voltage of frequency \[10\text{ }kHz\]producing \[40%\]modulation. Calculate the frequency of upper and lower sidebands.

    A) \[10010kHz,9990\text{ }kHz\]

    B) \[1010kHz,990kHz\]

    C) \[10100\text{ }Hz,9990\text{ }Hz\]

    D) \[1010MHz,990MHz\]

    Correct Answer: A

    Solution :

    [a] Modulating signal frequency \[\to 10kHz\] Carrier signal frequency \[\to 10MHz\] \[\therefore \]  Side band frequency are \[USB=10\,MHz+10\,kHz=10010\,kHz\] \[LSB=10\,MHz-10\text{ }kHz=9990\,kHz\]


You need to login to perform this action.
You will be redirected in 3 sec spinner