Question

write a paragraph on use of ultrasound in sonar technique with the help of diagram

Answer 1

Answer:

Sonar is used on ships and submarines to detect fish, other vessels or the sea bed. A pulse of ultrasound is sent out from the ship. It bounces off the seabed or shoal of fish and the echo is detected. The time taken for the wave to travel indicates the depth of the seabed or shoal of fish.