What is audible range of the average human ear ? Explain how ultrasound is used to clean spiral tubes and electronic components?


#1

(a) 20 Hz to 20,000 Hz.
(b) Spiral tubes and electronic components to be cleaned are placed in cleaning solution and ultrasound waves are sent into the solution, due to high frequency, the particles of the dust etc. get detached and drop out. This cleans the electronic components.