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The intensity of sound produced by roaring of a lion at a distance of 5m is 0.01W/m^2. Calculate the intensity level in decibel.

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The intensity of sound produced by roaring of a lion at a distance of 5m is 0.01W/m^2. Calculate the intensity level in decibel.

(a) 1dB

(b) 11dB

(c) 100dB

(d) 20dB

I have been asked this question during an online exam.

My doubt is from Reverberation topic in section Waves of Engineering Physics I

1 Answer

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Right answer is (c) 100dB

To elaborate: Intensity level = 10log0.01/10^-12

Intensity level = 100dB.

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