Physics for IGCSE & O level - Waves And Sounds (Section 2 - No. 19)
Which of the following is an application of the echo-sounding principle?
Measuring the depth of the sea.
Detecting flaws in metal.
Medical imaging of soft tissues
Identifying the type of wood
Explanation
The echo-sounding principle is applied to measure the depth of the sea, to detect flaws in metals, and to medical imaging of soft tissues. Identifying the type of wood is not relevant.
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