A sounding source and a listener are both at rest relative to each other. If wind blows from the listener towards the source, then which one of the following of sound will change?
Correct answer: B. Speed
- A. Frequency
- B. Speed
- C. Phase
- D. Wavelength
Explanation
Please note that the correct option for the property of sound that changes when there is wind blowing from the listener towards the source is b) Speed.
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About Waves
Progressive waves transfer energy through oscillations, with wavelength, frequency, amplitude and wave speed related by v = fλ; sound speed depends on the medium. Superposition produces interference and stationary waves in strings and organ pipes, while simple harmonic motion describes the oscillation itself and must be distinguished from wave propagation.
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