Which interface results in 99.9 percent of ultrasound energy being reflected?

Name: Which interface results in 99.9 percent of ultrasound energy being reflected?
Brand: Quizplus
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Question

Quizplus · Accepted Answer

The soft tissue-air interface results in 99.9 percent of ultrasound energy being reflected due to the significant difference in acoustic impedance between air and soft tissue. This large impedance mismatch causes almost all the ultrasound energy to be reflected back, rather than transmitted through the air.

Which Interface Results in 99