BCECE Medical BCECE Medical Solved Papers-2009

  • question_answer The intensity level of a sound wave is defined by an arbitrary scale. The zero of the scale is taken at the sound wave intensity

    A)  \[1\times {{10}^{-10}}W{{m}^{-2}}\]

    B)  \[1\times {{10}^{-12}}W{{m}^{-2}}\]

    C)  \[1\times {{10}^{-14}}W{{m}^{-2}}\]

    D)  \[1\times {{10}^{-16}}W{{m}^{-2}}\]

    Correct Answer: B

    Solution :

    The minimum intensity that can be heard, called threshold of hearing \[({{I}_{0}})={{10}^{-12}}W{{m}^{-2}}\] at\[1\text{ }kHz\].


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