Question

    Decibelisatermconnectedwith:

    A air Correct Answer Incorrect Answer
    B water Correct Answer Incorrect Answer
    C sound Correct Answer Incorrect Answer
    D soil Correct Answer Incorrect Answer

    Solution

    The decibel (dB) is a logarithmic unitthatindicatestheratioofaphysicalquantity (usually power or intensity) relative to a specified or implied reference level. A ratio in, decibels is tentimes the logarithmto base 10 of the ratio of two power quantities.

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