A sound wave is traveling toward a boundary where the density of the medium decreases by 10%.What percent of the wave intensity is transmitted through the boundary?
A)22
B)47
C)53
D)78

Question

Quizplus · Accepted Answer

When a sound wave encounters a boundary where the density decreases, some of the wave is reflected and some is transmitted. The transmission coefficient can be calculated using the impedance of the media. A decrease in density typically results in a higher transmission percentage, and in this case, 78% of the wave intensity is transmitted.

A Sound Wave Is Traveling Toward a Boundary Where the Density