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Which remote sensing method uses the principle of emitting sound waves...

This question belongs to Geological Engineering Remote Sensing And GIS In Geological Engineering
Remote Sensing and GIS in Geological Engineering
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Which remote sensing method uses the principle of emitting sound waves and recording their echoes?

Answer & Solution
Correct Answer: Option C
SONAR (Sound Navigation and Ranging) uses sound waves to detect underwater objects and topography.It is distinct from LiDAR and Radar which use light and microwaves respectively.
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