Q. Which of the following instruments uses sound waves for its operation?

  • (A) Radar
  • (B) SONAR
  • (C) Spectroscope
  • (D) Voltmeter
✅ Correct Answer: (B) SONAR
Explanation: SONAR uses sound waves to detect and locate underwater objects.

Published by Mr. Dubey ⭐ 109.86K Points at 18-Jul-2026 04:11 pm in General Awareness

Explanation by: Mr. Dubey
SONAR uses sound waves to detect and locate underwater objects.

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