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  1. The working of the quartz crystal in the watch is based on the

    2. A.

     Piezo - electric Effect
    B.

     Edison Effect
    C.

     Photoelectric Effect
    D.

     Johnson Effect

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    Answer : Option A

    Explanation :

    The quartz crystal oscillates (vibrates back and forth) at a precise frequency: exactly 32768 times each second. This is due to Piezoelectric Effect. Piezoelectric Effect is the ability of certain materials to generate an electric charge in response to applied mechanical stress.

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