COMEDK · Physics · 16. Waves and Sound
How many times more intense is a \(60 \mathrm{~dB}\) sound than a \(30 \mathrm{~dB}\) sound?
- A 1000
- B 2
- C 100
- D 4
Answer & Solution
Correct Answer
(A) 1000
Step-by-step Solution
Detailed explanation
Loudness of sound is given as \[ L=10 \log _{10} \frac{I}{I_{0}} \] So, we get \(L_{2}-L_{1}=10 \log _{10} \frac{I_{2}}{I_{1}}\) here \(L_{1}=30 \mathrm{~dB}, L_{2}=60 \mathrm{~dB}\)…
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