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A person can hear sound waves in the frequency range 20 Hz to 20 kHz. Find the minimum and the maximum wavelengths of sound that is audible to the person. The speed of sound is 360 m/s.

A person can hear sound waves in the frequency range 20 Hz to 20 kHz. Find the minimum and the
maximum wavelengths of sound that is audible to the person. The speed of sound is 360 m/s.
 

Grade:12

1 Answers

Arun
25758 Points
4 years ago
for maximum wavelength n = 20 Hz. As (η∝1/λ) b) for minimum wavelength, n = 20 kHz ∴ λ = 360/ (20 × 10^3) = 18 × 10^3 m = 18 mm ⇒ * = (v/n) = 360/20 = 18 m

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