Question

what is ultrasonic vibrations ?how is ti importance

Answer 1

ultrasonic vibrations are those which which cannot be heard by humans ....
have extreme level of hertz..

thats all i know about..

Answer 2

the vibrations of frequency more than 20000 hertz are called ultrasonic vibrations.it is not possible for human ear to hear it. it is used in sonar radars to locate underwater objects.

Hope it helps you friend