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CBSE Class 9 Answered

An echo returned in 3s.What is the distance of the reflecting surface from the source,given that the speed of sound is 344 m s-1
Asked by Vishesh | 13 Dec, 2013, 06:26: AM
answered-by-expert Expert Answer
The sound travels from the source to the reflecting surface and then back to the source.
If the distance between the source and the reflecting surface is d, speed of sound is v and time taken by sound to return back is t, then
 
Answered by | 13 Dec, 2013, 10:41: AM

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CBSE 9 - Physics
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