Ultrasound which is upper limit of human hearing is characterized by w – McqOptions

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1.	Ultrasound which is upper limit of human hearing is characterized by which of the followingfrequencies?
A.	Above 20 KHz
B.	Above 200 KHz
C.	Above 2 KHz
D.	Below 20 KHz
Answer» B. Above 200 KHz

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