- A Infrasonic waves have a higher frequency than ultrasonic waves.
- B Ultrasonic waves have a higher frequency than infrasonic waves.
- C Infrasonic waves cannot travel through solids while ultrasonic waves can.
- D Ultrasonic waves cannot travel through liquids while infrasonic waves can.
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Answer:
B
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Infrasonic waves have a frequency below 20 Hz while ultrasonic waves have a frequency greater than 20 kHz.
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