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a-point-source-of-noise-produces-a-sound-of-60-db-at-a-distance-of-10-m-from-it-if-the-sound-is-measured-at-a-distance-of-40-m-what-will-be-its-value
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Question
A point source of noise produces a sound of 60 dB at a distance of 10 m from it. If the sound is measured at a distance of 40 m, what will be its value ?
A
48 dB
B
54 dB
C
57 dB
D
44 dB
View Answer
Answer & Explanation
Answer:48 dB
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