explain the working and applications of Sonar
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Sonar is a device that uses ultrasonic waves to measure the distance, direction and speed of underwater objects. Principle: It uses the phenomenon of echoes in determining the sea-depth and locating the presence of under-water objects.
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the word sonar stand for SOUND NAVIGATION AND RANGING sonar is an apparatus (or device) which is used to find the depth of a sea or to locate the under-water things like shoals of fish ,shipwrecks ,and enemy submarines
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