Question

explain the working and application of a sonar​

Answer 1

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SONAR stands for SOund Navigation And Ranging.

Working of SONAR:-

It is a device that uses ultrasonic waves to measure the distance , direction and speed of underwater objects.

The transmitter produces and transmits ultrasonic waves. These waves travel through water and after striking the object on the seabed, get reflected back and are sensed by the detector. The detector converts the ultrasonic waves into electrical signals which are appropriately interpreted.

Application of SONAR:-

• Detecting & tracking submarines, ships, etc.

• Mapping the ocean floor.

• Detecting under-water mines.

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Answer 2

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$\bold{SONAR}$is an acronym for Sound Navigation And Ranging. It is an acoustic device used to measure the depth, direction, and speed of under-water objects such as submarines and ship wrecks with the help of ultrasounds. It is also used to measure the depth of seas and oceans.

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’.

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@Alan ✌