Question

Consider a pipe of length 80.0 cm open at both ends. What is the lowest frequency f of the sound wave produced when you blow into the pipe?

Answer 1

Answer:

$f = 214.375\ Hz$

Explanation:

Given,

Length of the Pipe, L = 80 cm

Frequency ,f = ?

Speed of sound, v = 343 m/s

Wavelength when pipe is open at both the ends

$\lambda = 2 L$

$\lambda = 2\times 80 = 160\ cm = 1.6\ m$

Fundamental frequency

$f =\dfrac{v}{\lambda}$

$f =\dfrac{343}{1.6}$

$f = 214.375\ Hz$