Question

what are the two applications of ultrasonic sound​

Answer 1

Applications of ultrasonic sound are as follows:-

i) Ultrasonic waves are used to clean hard to reach parts in the machines.

ii)They also help to detct flaws and cracks in a metal block.

iii) These are also used to destroy kidney stone in the body.

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Answer 2

1. It is unhearable to us.

2. It's frequency is 20000hz or

greater.