Solved UPSC CDS/OTA Question
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Q · Waves and SoundEasy · 45s
A sonar uses which principle? 233
TopicWaves and Sound
Question Typemultiple choice
DifficultyEasy
Marking+1 / −0.33
Test Duration30 min
Step-by-Step Solution
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Sonar systems use sound wave reflection to detect objects underwater.
241
Final Answer: Option B — Echo
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