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A boy shouts inside a deep well and hear...

A boy shouts inside a deep well and hears the echo 0.4s after shouting. If the speed of sound is 340 `ms^-1` , find the depth of the water level in the well

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To find the depth of the water level in the well based on the time it takes for the echo to return, we can follow these steps: ### Step 1: Understand the problem When the boy shouts, the sound travels down to the water surface and then reflects back up to him. The total time for this round trip is given as 0.4 seconds. ### Step 2: Identify the distance traveled by sound The sound travels a distance equal to the depth of the well (D) down to the water and then the same distance back up. Therefore, the total distance traveled by the sound is: \[ \text{Total Distance} = 2D \] ...
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