Physics · Waves and Acoustics
Which of the following statements is NOT correct regarding ultrasonic waves?
- 1They can propagate through liquids and solids.
- 2The wavelength of these waves is very short compared to audible waves.
- 3The normal human ear can easily hear them.✓
- 4Their frequency is very high, typically above 20,000 Hz.
Correct answer
The normal human ear can easily hear them.
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