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JEE Main & Advanced Sample Paper JEE Main - Mock Test - 18

  • question_answer
    A signal wave of frequency 12 kHz is modulated with a carrier wave of frequency 2.51 MHz. The upper and lower side band frequencies are respectively

    A) 2512 kHz and 2508 kHz

    B) 2522 kHz and 2488 kHz

    C) 2502 kHz and 2498 kHz

    D) 2522 kHz and 2498 kHz

    Correct Answer: D

    Solution :

    [d]: Here,\[{{\upsilon }_{s}}=12kHz,\] \[{{\upsilon }_{c}}=2.51MHz=2510kHz\] The upper side band frequency \[=2510+12=2522\text{ }kHz\] The lower side band frequency \[=2510-12=2498\text{ }kHz\]


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