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At a Distance of 20 M from a Sound Source

Question 20

Multiple Choice

At a distance of 20 m from a sound source the intensity level is 60 dB.What is the intensity level (in dB) at a point 2.0 m from the source? Assume that the source radiates equally in all directions.


A) 80 dB
B) 45 dB
C) 62 dB
D) 87 dB
E) 95 dB

Correct Answer:

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