Question

14. A ship sends a sound wave
to the bottom of the sea and
receives an echo after 0.3 sec
Assume speed of sound in
water to be 1500 m/s.
Calculate the depth of the sea​

Answer 1

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Answer 2

Velocity of sound in water v=1500 m/s

Let the depth of sea be x.

The sound has to travel to the bottom of the sea and get reflected back to the ship itself, thus total distance traveled by the sound is 2x.

Time taken to hear an echo t=1 s

So, 2x=vt

Or 2x=1500×1

⟹ x=750 m

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