differentiate between echo and sonar
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echo will come back in 0.1 sec.sonar is a sound navigating ranging it is used to detect
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the sonar techenique is used to determine the depth of the sea under waterhills and valleys
we shout or clap near suituable refleting object like tall bulding and mountain this sound we hear again is called echo
we shout or clap near suituable refleting object like tall bulding and mountain this sound we hear again is called echo
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