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in Physics by (30.0k points)

An echo is returned in 6 seconds. What is the distance of reflecting surface from source? [Given that speed of sound is 342 m/s.] 

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1 Answer

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by (130k points)

Given, 

Time in which echo returned, t = 6 s, 

Speed of sound, v = 342 m/s 

Distance = Speed × Time = 342 × 6 = 2052m 

As this distance is twice the distance of reflecting surface from source. 

So, 

The distance of reflecting surface from source = 2052 / 2 = 1026 m.

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