Question

How ultra sound is used to clean hard to reach places?

• A. We can see the dirt/dust particles by using ultrasound
• B. Ultrasound stirs up the dust/dirt particles
• C. Ultrasonic waves absorb all the dust/dirt particles
• D. All the above are true.

Answer 1

Answer: (B)

Ultrasound stirs up the dust/dirt particles

Ultrasonic waves are used for cleaning hard to reach places such as spiral tube, odd shaped machine parts etc. The object to be cleaned is kept in the cleaning solution and the solution is subjected to the ultrasonic waves. The ultrasonic waves stir up the dust/dirt particles, causing the particles to get detached from the object and hence the object is thoroughly cleaned.