Question 10 — A ship searching for a - Questions at the end of the chapter - Chapter 10 - Sound Waves: Characteristics and Application (Exploration

Last updated at July 3, 2026 by

Question 10
A ship searching for a sunken ship sent a sonar signal and detected an echo after 5 s. If ultrasonic wave travels at 1525 m s⁻¹ in seawater, approximately how far down in the ocean is the wreckage of the sunken ship located?
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  • Time to reach the wreck \(=\dfrac{5}{2}=2.5\ \text{s}\).
  • Depth \(=v\times t=1525\times 2.5=\mathbf{3812.5\ \text{m}}\).
Sonar Depth One-way time = 5 / 2 = 2.5 s Depth = speed times time 1525 times 2.5 = 3812.5 m
Back to: 10.8 Ultrasonic and Infrasonic Waves, and their Applications
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