Question

what do you mean by sonar and give examples?
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Answer 1

Answer:

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Active sonar involves the transmission and reception of sound waves. For example, when a submarine is used to map the topography of the ocean's floor, it sends out sound pulses, often referred to as pings, towards the bottom of the ocean within its vicinity. ... The reflected pulses are often called echoes.

Answer 2

Answer:

Active sonar involves the transmission and reception of sound waves. For example, when a submarine is used to map the topography of the ocean's floor, it sends out sound pulses, often referred to as pings, towards the bottom of the ocean within its vicinity. ... The reflected pulses are often called echoes.