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    Question

    Decibel is the unit used for

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    A Speed of light Correct Answer Incorrect Answer
    B Intensity of heat Correct Answer Incorrect Answer
    C Intensity of sound Correct Answer Incorrect Answer
    D Radio wave frequency Correct Answer Incorrect Answer

    Solution

    The decibel (abbreviated dB) is the unit used to measure the intensity of a sound. The decibel scale is a little odd because the human ear is incredibly sensitive. Our ears can hear everything from your fingertip.brushing lightly over your skin to a loud jet engine. The decibel (dB) is a logarithmic unit that indicates the ratio of a physical quantity (usually power or intensity) relative to a specified or implied reference level.

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