Match the following sounds with their suitable decibels.
A
140dB
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B
10dB
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C
70dB
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D
30dB
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Solution
Loudness of a sound depends on its intensity. Intensity is a measurable quantity while loudness is a sensation. The normal whisper of a human being can produce a loudness of 10dB. The jet engines can produce a loudness of about 140dB. The traffic can produce a loudness of 70dB. The average human breathing can produce a loudness of 30dB.