Solve the Problem $d = 10 \log \frac { I } { I _ { 0 } }$

question 213

Multiple Choice

Solve the problem.
-The loudness of a sound can be quantified in units called decibels, where the number of decibels d is given by the formula $d = 10 \log \frac { I } { I _ { 0 } }$ .
What is the decibel rating of a sound having an intensity $I = 100 \mathrm { I } _ { 0 }$ ?

• A) 2 decibels
• B) 20 decibels
• C) 100 decibels
• D) 12 decibels

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