The unit for sound intensity level is decibel (dB). A 10 dB increase corresponds to how many times more intensity?

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Study for the Ontario Power Generation (OPG) Orange 1 Test. Ace your exam with multiple choice questions and detailed explanations. Prepare confidently!

Multiple Choice

The unit for sound intensity level is decibel (dB). A 10 dB increase corresponds to how many times more intensity?

Explanation:
Sound intensity level uses a logarithmic scale. The formula is L = 10 log10(I/I0). A change of 10 dB means 10 = 10 log10(I2/I1). Dividing by 10 gives 1 = log10(I2/I1), so I2/I1 = 10. Therefore, a 10 dB increase corresponds to the intensity increasing by a factor of ten.

Sound intensity level uses a logarithmic scale. The formula is L = 10 log10(I/I0). A change of 10 dB means 10 = 10 log10(I2/I1). Dividing by 10 gives 1 = log10(I2/I1), so I2/I1 = 10. Therefore, a 10 dB increase corresponds to the intensity increasing by a factor of ten.

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