Question

# The human ear can detect continuous sounds in the frequency range from 20Hz to 20kHz. Assuming that the speed of sound in air is 330m/s for all frequencies, calculate the wavelengths corresponding to the given extreme frequencies of the audible range.

Solution

## From relation v=fλ For frequency f=20 Hz ∴λ=vf =33020 16.5 m For frequency f=20000 Hz ∴λ=33020000 =16.5×10−3 m =16.5 mm

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