Question

What is SONAR?
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Answer 1

Explanation:

Sonar :-

Sonar, short for Sound Navigation and Ranging, is helpful for exploring and mapping the ocean because sound waves travel farther in the water than do radar and light waves. ... There are two types of sonar—active and passive

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Answer 2

A system for the detection of objects under water by emitting sound pulses and detecting or measuring their return after being reflected.