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Kriti
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Asked: 2026-10-14T05:54:21+00:00 In:

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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The total two-way transit time is 5 seconds, making one-way travel time 2.5 seconds. Multiplying 1525 meters per second by 2.5 seconds places the sunken wreckage at 3812.5 meters depth.

Class 9 Science Exploration Chapter 10 Important Questions from Sound Waves

SQP from Class 9 Science Chapter 10 Sound Waves Characteristics and Applications

class 9 science chapter 10 sound waves solutionsif ultrasonic wave travels at 1525 m s⁻¹ in seawaterncert solutions – sound waves: characteristics and applicationsscience exploration class 9 exercise 10 solutionssearching for a sunken ship sent a sonar signal
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    1. The sonar pulse completes a two-way round trip by traveling to the ocean floor and reflecting back to the ship in 5 seconds. Therefore, the one-way transit time to reach the wreckage is 2.5 seconds. Multiplying the speed of sound in seawater, 1525 meters per second, by 2.5 seconds reveals that the wreckage is located at a depth of 3812.5 meters.

       

      For more NCERT Solutions of Class 9 Science Exploration Chapter 10 Sound Waves Characteristics and Applications Question Answer (2026-27)

      https://www.tiwariacademy.com/ncert-solutions/class-9/science/exploration-chapter-10/

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