O-LevelPhysicsWaves5054/12 · May/June 2024 · Q231 Mark

The speed of sound in air is 330 m/s. Which sound is classed as ultrasound?

Asound with a wavelength of 250 cm

Bsound with a wavelength of 25 cm

Csound with a wavelength of 2.5 cm

Dnone of the above

✓ Correct answer

D: none of the above

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