If I₀ = 10−¹² W/m² Is the Threshold of Hearing,a

question 47

Multiple Choice

If I₀ = 10−¹² W/m² is the threshold of hearing,a sound with intensity I₁ = 10−¹¹ W/m² will give a certain decibel level.Suppose a new sound has an intensity I₂ = 2I₁²/I₀.What is the new decibel level?

• A)2.3 dB
• B)23 dB
• C)100 dB
• D)it will square the decibel level
• E)1.0 dB

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