The principle used in radar is the same as that of Sonar. In radar we use radio waves ; whereas in sonar we use ?
Correct answer: C. Ultrasonic
- A. red waves
- B. Infrared waves
- C. Ultrasonic
- D. super sonic
- E. None of these
Explanation
Sonar uses ultrasonic sound waves, whose frequencies are above the human hearing range. Radar uses electromagnetic radio waves, so the two systems use different kinds of waves despite similar echo-based principles.
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