Question

a what is range of frequency associated with ultrasound. b write two two uses of ultrasound in medical and non medical field

Answer 1

ultra sound is useful to human being i uses ultra sound

Answer 2

above 20KHz is the frequency associated with ultrasounds

Two medical uses of ultrasounds are :-
1)it is used to form image of heart(echocardiograpy)
2)It is used to break kidney stones into very small particles so that it can flush out with urine