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    Question

    The audio signals of TV are :

    A Amplitude modulated Correct Answer Incorrect Answer
    B Frequency modulated Correct Answer Incorrect Answer
    C Unmodulated Correct Answer Incorrect Answer
    D Velocity modulated Correct Answer Incorrect Answer

    Solution

    In telecommunications and signal processing, frequency modulation (FM) conveys information over a carrier wave by varying its instantaneous frequency. This contrasts with amplitude modulation, in which the amplitude of the carrier is varied while its frequency remains constant. In analogue television, the sound portion of a broadcast is invariably modulated separately from the video.

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