SONAR is based on the principle of___________?
Correct answer: A. Echo
- A. Echo
- B. reverberation
- C. resonance
- D. None of these
Explanation
SONAR sends ultrasonic waves into water and detects the returning reflection, or echo, to determine distance or locate objects. Reverberation is the persistence of sound caused by repeated reflections, not the basic operating principle of SONAR.
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