Question

what is sonar? how is it used to find depth of sea ? explain wth diagram

Answer 1

SOund Navigation And Ranging..is (SONAR)) is a technique that uses sound propagation (usually underwater, as in submarine navigation ) to navigate, communicate with or detect objects on or under the surface of the water, such as other vessels. Two types of technology share the name "sonar": passive sonar is essentially listening for the sound made by vessels; active sonar is emitting pulses of sounds and listening for echoes. Sonar may be used as a means of
acoustic location and of measurement of the echo characteristics of "targets" in the water. Acoustic location in air was used before the introduction of radar . Sonar may also be used in air for robot navigation, and SODAR (an upward looking in-air sonar) is used for atmospheric investigations. The term sonar is also used for the equipment used to generate and receive the sound. The acoustic frequencies used in sonar systems vary from very low ( infrasonic ) to extremely high ( ultrasonic )

Answer 2

Sona is sound navigation and ranging it helps to find the depth of sea by producing ultrasound waves under the sea which reflect back and reach the detectors and we can find the depth of the sea by seeing the time taken for the waves to reflect back and come