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Hrishant Goswami Grade: 10
        A person can hear sound waves in the frequency range 20 Hz to 20 kHz. Find the minimum and the maximum wavelength of sound that is audible to the person. The speed of sound is 360 m s-1.
3 years ago

Answers : (1)

Jitender Pal
askIITians Faculty
365 Points
										Sol. a) 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.
3 years ago
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