Physics
Grade-6
Easy
Question
Ultrasounds have large frequency.
- True
- False
Hint:
Ultrasound is not audible to human ear
The correct answer is 'True'.
Ultrasound sound waves have frequencies above those audible to the human ear, that is, greater than approximately 20 MHz. Ultrasound typically used in clinical settings has frequencies between 2 and 12 MHz.
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