QueSLIUILINO. 2
In which of the following absorbents, absorption takes place due to the frictional losses touring
movement of the air contained in the material caused by the sound waves?
Answer
B.O Cavity resonators
D. Composite types
A.O Resonant panels
C.O Porous materials
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Explanation:
Explanation: In porous materials, absorption takes place due to the frictional losses occurring due to the to and fro movement of the air contained in the material caused by the sound waves.
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