Question

In SONAR, we use

• A. ultrasonic waves
• B. infrasonic waves
• C. radio waves
• D. audible sound waves

Answer 1

The correct option is A ultrasonic waves

Answer is A.

Sonar illustrates how a ship on the ocean utilizes the reflecting properties of ultrasound waves to determine the depth of the ocean. A ultrasound wave is transmitted and bounces off the seabed. Because the speed of sound is known and the time lapse between sending and receiving the sound can be measured, the distance from the ship to the bottom of the ocean can be determined. This technique is called sonar (originally an acronym for Sound Navigation And Ranging).