Assuming that the wave speed varies little when sound waves are traveling though a material that suddenly changes density by 10%,what percentage of the incident wave intensity is reflected?
A)

Question

Assuming that the wave speed varies little when sound waves are traveling though a material that suddenly changes density by 10%,what percentage of the incident wave intensity is reflected?
A)< 1%
B)5%
C)10%
D)20%

Quizplus · Accepted Answer

When the density change is small and the wave speed is nearly constant, the reflection coefficient is small, leading to less than 1% of the wave intensity being reflected.

Assuming That the Wave Speed Varies Little When Sound Waves