What absorber in which efficient absorption is only possible over a very narrow band approaching 1.0 (total absorption)? A. Porous material B. Helmholtz resonator C. Panel Absorber D. Membrane absorber

What absorber in which efficient absorption is only possible over a very narrow band
approaching 1.0 (total absorption)?
A. Porous material
B. Helmholtz resonator
C. Panel Absorber
D. Membrane absorber
by

1 Answer

Answer :

B. Helmholtz resonator
by

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