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

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

  • question_answer
    The modulation index of an FM carrier having a carrier swing of 200 kHz and a modulating signal 10 kHz is

    A)            5    

    B)            10

    C)            20  

    D)            25

    Correct Answer: B

    Solution :

                       CS = 2 ´ D f   or   Df = CS/2 \ \[\Delta f=\frac{200}{2}=100\,kHz\] Now \[{{m}_{f}}=\frac{\Delta f}{{{f}_{m}}}=\frac{100}{10}=10\]


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