Chapter 11

NCERT
Class 9
Science
Solutions
16. How is ultrasound used for cleaning?

Question:

How is ultrasound used for cleaning?

Answer:

Ultrasound is used for such places of objects which are out of reach. Such as spiral tubes, complex shaped mechanical parts etc. To clean them, cleaning rags are kept in the solution. Ultrasound waves are sent in this solution. Due to the high frequency, the particles of dust, grease and dirt are separated and fall down. In this process objects become very clear.

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