Question

There is a sunken ship at a depth of 50m in a sea. From the surface of sea waves are sent to locate it. Find the time when the wave after reflection will reach the surface. State whether echo is heardf or not? Give reason. Take speed of sound in water= 1500ms -1 .

Answer 1

Answer:

use the formula velocity=2×distance/time where.velocity is 1500 Ms-1, distance is 50m

if the answer is less than 17m then the answer would be no. if it is more than 17m then u can hear the echo.