Question

Explain " SONAR "

Class 9

Good content answer required

Answer 1

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☣ $\large{\bf{SONAR }}$☣

▶The word 'SONAR' stands 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.

▶A sonar apparatus consists of two parts :

( i ) A transmitter for emitting Ultrasonic waves

( ii ) A receiver for detecting Ultrasonic waves

▶The sonar device measures time taken by the ultrasonic sound pulse to travel from the ship to the bottom of the sea and back to the ship.

▶Half of this time gives the time taken by the ultrasonic sound travel from the ship to the bottom of the sea.

▶Through sonar, we can calculate the distance between the ship and the bottom of the sea.

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