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Unit - 7.1 Characteristics Of Sound — PHYSICS STD 8 — Question

ICSE BoardEnglish MediumSTD 8PHYSICSUnit - 7.1 Characteristics Of Sound1 Mark
Question
To what use sonar is put? Explain clearly?
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Answer

NOAA scientists primarily use sonar to develop nautical charts, locate underwater hazards to navigation, search for and map objects on the seafloor such as shipwrecks, and map the seafloor itself. There are two types of sonar—active and passive.

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