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Physics for IGCSE & O level - Waves And Sounds (Section 5 - No. 42)

What is ultrasound?
Sounds below the range of human hearing
Sounds within the range of human hearing
Sounds above the range of human hearing
Sounds with varying wavelengths

คำอธิบาย

Sounds above the range of human hearing are called ultrasonic sounds, or ultrasound.

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