In SONAR, we use

ultrasonic waves

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infrasonic waves

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audible sound waves

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radio waves

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Solution

The correct option is A
ultrasonic waves

Explanation
In a SONAR, we use ultrasonic waves.
It is used to send ultrasonic waves and know the depth of the sea or ocean using the echo concept of sound.
Hence, option A is correct.

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Similar questions

In SONAR we use :

(a) ultrasonic waves

(b) infrasonic waves

(d) audible sound waves

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