Q. 214.5( 17 Votes )

Explain the worki

Answer :

Working: SONAR is an acronym for Sound Navigation and Ranging. A beam of ultrasonic sound is produced and transmitted by the transducer (it is a device that produces ultrasonic sound) of the SONAR, which travels through sea water. The echo produced by the reflection of this ultrasonic sound is detected and recorded by the detector, which is converted into electrical signals. The distance (d) of the under-water object is calculated from the time (t) taken by the echo to return with speed (v) is given by 2d = v × t. This method of measuring distance is also known as ‘echo-ranging’. The figure below illustrates the working.


Applications


1. Used to measure the depth, direction, and speed of under-water objects such as submarines and ship wrecks.


2. It is also used in military for detecting the presence of enemy ships.


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