Question

the echo sounder of ship sends abrust of sound wave towards the seabed. 0.2 seconds later the reflected sound waves were picked up by the ship so how long did it take to reach the seabed​

Answer 1

Answer:

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