The human ear can be sensitive to sound frequencies up to 20 kHz.What wavelength does this correspond to at normal temperature and pressure? A)0.165 m B)165 cm C)16.5 mm D)1650 $\times$ 10^-4 m E)1.65 mm

Question

Quizplus · Accepted Answer

The speed of sound in air at normal temperature and pressure is approximately 343 m/s. The wavelength of a sound wave with a frequency of 20 kHz can be calculated using the formula: wavelength = speed of sound / frequency. 
Thus, wavelength = 343 m/s / 20,000 Hz = 0.01715 m = 17.15 mm. 
However, the question asks for the maximum sound frequency that the human ear can detect, which is 20 kHz. Therefore, the answer should be in the order of millimeters. The closest option is C, 16.5 mm.

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