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a sound absorber attenuat...
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A sound absorber attenuates the sound level by 20 dB. The intensity decreases by a factor of
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Every 10 dB change corresponds to a factor of 10 change in intensity. 20 dB = $10 \times 10 = 100$.
AP ECET Metallurgical Eng - 2026
AP ECET Metallurgical Eng
Updated On:
Jul 4, 2026
10
100
1000
10000
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The Correct Option is
B
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