PROPERTIES OF ULTRASONIC WAVES
1. They have a high energy content.
2. lust like ordinary sound waves, ultrasonic waves get reflected, refracted and absorbed.
3. They show negligible diffraction due to their small wavelength. Hence they can be transmitted over long distances without any appreciable loss of energy.
4. They produce intense heating effect when passed through a substance.
5. If an arrangement is made to form stationary waves of ultrasounds in a liquid, it serves as a diffraction grating. It is called an acoustic grating.
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