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A person clapped his hands near a cliff and heard the echo after 5 s. What is the distance of the cliff from the person if the speed of the sound, v is

taken as 346 m s–1?

Sciences - Main Course Book

Chapter 12. Sound



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The sound traveled from the place the person stood, to the cliff and then rebounded back to the person , so the person heard the resound/echo.

So the sound traveled twice the distance between him/her and the cliff.

Distance between cliff and person = 346 m/sec * 5 seconds / 2
       = 865 meters

1 5 1
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