Use of elastomeric foam as sound absorber

Q.  Elastomeric foam used as a sound absorber is made of ___________
- Published on 11 Sep 15

a. Non-porous material
b. Porous material
c. Perforated material
d. Resonator

ANSWER: Porous material

Post your comment / Share knowledge

Enter the code shown above:
(Note: If you cannot read the numbers in the above image, reload the page to generate a new one.)