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    Question

    What is the unit used to measure noise?

    A.

    Lumen

    B.

    Hertz

    C.

    Decibel (dB)

    D.

    Watt

    Correct option is C


    The correct answer is (c) Decibel (dB)
    Explanation:
    · Noise levels are measured in decibels (dB).
    · It indicates the intensity or loudness of sound.
    · Higher dB = louder and more harmful sound.
    Information Booster:
    · Normal conversation: 40–60 dB
    · Traffic noise: 70–85 dB
    · Above 85 dB causes hearing damage with prolonged exposure.

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