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    Question

    Which one of the following pairs is not correctly

    matched?
    A Odometer : Device for measuring the distance traveled by vehicles Correct Answer Incorrect Answer
    B Ondometer : Device for measuring the frequency of electromagnetic waves Correct Answer Incorrect Answer
    C Audiometer : Device for measuring sound intensity Correct Answer Incorrect Answer
    D Ammeter : Device for measuring electrical power Correct Answer Incorrect Answer

    Solution

    β€’ An Ammeter is a device used to measure electric current, not electrical power. β€’ It measures the amount of electric current flowing through a circuit and displays it usually in amperes (A). β€’ Thus, option (d) is incorrectly matched. β€’ The other options are correctly matched: o Odometer measures the distance traveled by a vehicle. o Ondometer measures the frequency of electromagnetic waves. o Audiometer measures the intensity or sensitivity of sound (especially for hearing tests). Thus, the correct answer is (d).

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