Question

The echo-receiver of a sonar attached to a ship, receives the echo from the bottom of a sea, 6 seconds after the transmission of ultrasonic waves. If the speed of sound in water is 1600 m/s, then the depth of the sea is ______ *


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Answer 1

Explanation:

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Answer 2

The echo-receiver of a sonar attached to a ship, receives the echo from the bottom of a sea, 6 seconds after the transmission of ultrasonic waves. If the speed of sound in water is 1600 m/s, then the depth of the sea is 4800 m

Explanation:

Time taken by the echo t = 6 seconds

Speed of the sound in water v = 1600 m/s

If the depth of the sea be d m then

The sound from sonar will go to the bed of the sea and will reflect back as an echo, when it will reach the ship again then the echo-receiver will receive it.

Thus, the total distance travelled by the sound = 2d

From the formula

Distance = Speed × Time

$2d=v\times t$

$\implies 2d=1600\times 6$

$\implies d=\frac{1600\times 6}{2}$

$\implies d=4800$ m

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Q: The echo-receiver of a sonar attached to a ship, receives the echo from the bottom of sea 4 seconds after the ultrasonic waves were sent into the sea.  If the speed of sound in water is 1500 m/s, then what is the depth of the sea​?

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