SONAR is a device that is used to measure the distance of underwater objects by a ship. Which of the following types of waves does it use for this purpose?
- A. Infrasonic waves
- B. Sound waves in audible range for human beings
- C. Ultrasonic waves ✓
- D. All of the above
Correct Answer: C. Ultrasonic waves
Explanation
SONAR (Sound Navigation and Ranging) relies on transmitting and receiving high-frequency ultrasonic waves underwater to detect and locate objects.
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