Question

A BOY SHOUTS IN THE DEEP WELL AND HEARS THE ECHO 0.4S AFTER SHOUTING.IF THE SPEED OF SOUND IS 340M/S,FIND THE DEPTH OF THE WATER LEVEL IN THE WELL.

Answer 1

GIVEN :

Speed of sound = 340 m/s

Time for echo to be heard = 0.4 s

Time taken by sound waves to reach the bottom of the well = 0.4/2 = 0.2 s

TO FIND :

The depth of the water level in the well = ?

SOLUTION :

Velocity = Distance / Time

Distance = Velocity * Time

Distance = 340 * 0.2

Distance = 68 m

Therefore the depth of the water level in the Well is 68m

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Answer 2

Answer:

Explanation:

Solution :-

Given :-

Speed of sound = 340 m/s²

Time taken by the sound to go from the top of the well to the water level in the well and back to the top of the well = 0.4 sec

Therefore, Time taken by the sound to go from the top of the well to the water level in the well,

t = 0.4/2

t = 0.2 s

But, S = vt, where S is the depth of the water level

S = 340 × 0.2

S = 68 m

Hence, the depth of the water level is 68 m.