Q145 / 270 · NDA 2022 (Phase 2) · General Ability

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
Correct answer
C
Ultrasonic waves
D
All of the above

Hence, the correct answer is option: 'C'.

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