As Section 17.3 discusses, high-frequency sound waves exhibit less diffraction than low-frequency sound waves do. Howeve

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As Section 17 3 Discusses High Frequency Sound Waves Exhibit Less Diffraction Than Low Frequency Sound Waves Do Howeve 1 (38.96 KiB) Viewed 36 times

As Section 17.3 discusses, high-frequency sound waves exhibit less diffraction than low-frequency sound waves do. However, even high frequency sound waves exhibit much more diffraction under normal circumstances than do light waves that pass through the same opening. The highest frequency that a healthy ear can typically hear is 2.0×104 Hz. Assume that a sound wave with this frequency travels at 344 m/s and passes through a doorway that has a width of 0.93 m. (a) Determine the angle that locates the first minimum to either side of the central maximum in the diffraction pattern for the sound. (b) Suppose that yellow light (wavelength =552 nm, in vacuum) passes through a doorway and that the first dark fringe in its diffraction pattern is located at the angle determined in part (a). How wide would this hypothetical doorway have to be? (a) Number Units (b) Number Units