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  9. Q39

CGPSC 2011 · Question 39 of 146

SONAR is mostly used by

Sound

  1. AAstronauts
  2. BDoctors
  3. CEngineers
  4. DNavigatorsCorrect

Answer: D. Navigators

Explanation

SONAR (Sound Navigation and Ranging) is used by navigators, especially in submarines and ships, to detect underwater objects by sound waves.

Source: CGPSC PCS Prelims 2011 GS Paper, solved paper via iasexamportal.com

← Q38View full paper (146 questions)Q40 →

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