Write the two reasons of using ultrasonic waves is SONAR
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• Ultrasonic waves are used in the instrument SONAR (Sound Navigation and Ranging) to measure the depth of the ocean.
Reasons
- Ultrasonic waves have a very high frequency due to which they can penetrate deep in sea water without being absorbed.
- Ultrasonic waves cannot be confused with the noises, such as the voice of engines of ship. It is because the ultrasonic waves are not perceived by human ear.
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