Question

Which one of the following is a sound absorbing material?

• A. Porous
• B. Solid
• C. Transparent
• D. None of the above

Hint:

Porous materials are most effective at absorbing sound and are commonly used in acoustically treated spaces to reduce noise levels.

Answer 1

The Correct Option is A

Sound-absorbing materials typically have a porous structure that allows sound waves to be trapped within the material, thus reducing their reflection and preventing echoes.
Porous materials, such as foam, fabric, and insulation materials, are commonly used in acoustic applications to control noise levels in buildings.
Solid and transparent materials tend to reflect sound, while porous materials are ideal for absorbing sound waves and improving room acoustics.