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    Question

    The functioning of a quartz crystal in a watch is based

    on which principle?
    A Johnson effect Correct Answer Incorrect Answer
    B Photoelectric effect Correct Answer Incorrect Answer
    C Edison effect Correct Answer Incorrect Answer
    D Piezoelectric effect Correct Answer Incorrect Answer

    Solution

    Quartz crystals in watches work on the piezoelectric effect, where they generate an electric charge in response to mechanical stress, maintaining precise timekeeping.

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