Question

what is ultra sonic sound​

Answer 1

Ultrasonics sound are the high frequency sound waves i.e more than 20000Hz or 20KHz

Answer 2

Heya!

Ultra sound is a sound waves with frequencies higher than the upper audible limit of human hearing .ultrasound is not different from "normal'' sound in its physical properties except that humans can not hear it. This limit varies from person to person and is approximately 20 kilo Hertz in healthy young adults ...

Hope this answer will help u..