Sound waves transmitted in sea depth=3100m with help of sonar techniqe after what time echo will be heard
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SONAR is originally an acronym for SOund Navigation And Ranging is a technique that uses sound propagation (usually underwater, as in Submarine navigation) to navigate, communicate with or detect other vessels.Two types of technology share the name "sonar": passive sonar is essentially listening for the sound made by vessels; active sonar is emitting pulses of sounds and listening for echoes.
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Sound waves are transmitted downwards into the sea at the depth of 3100 m with the help of SONAR. technique. After how much time, au echo will be heard?
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