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Q.

The technique used for detecting distant underwater objects by acoustic means is called ____.


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Detailed Solution

The technique used for detecting distant underwater objects by acoustic means is called SONAR.
Sonar is the technique used for detecting distant underwater objects by acoustic means. Scientists majorly use this device to develop nautical charts, to navigate and mapping of seafloors also. SONAR is summarized as Sound Navigation and Ranging.  When a submarine sends out sound pulses to map the topography of the oceans floor, the sound pulses get revert back and reception of sound waves can be done by the device SONAR.
 
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