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Preview questions
1. What is the medium through which sound travels fastest?
Air · Water · Solid · Vacuum
2. Which of the following is a characteristic of sound waves?
Transverse waves · Longitudinal waves · Static waves · Electromagnetic waves
3. What is the unit of frequency?
Hertz · Decibel · Newton · Joule
4. What is the range of audible sound for humans?
20 Hz to 20 kHz · 10 Hz to 15 kHz · 15 Hz to 25 kHz · 5 Hz to 30 kHz
5. Which property of sound is related to its loudness?
Frequency · Amplitude · Wavelength · Velocity
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