Physics

Problem

Which of the following expressions gives the frequency

f_n

of the

n^{\text{th}}

harmonic produced by an organ pipe open at both ends, where

v

is the speed of sound and

L

is the length of the pipe? a)

f_n = \dfrac{(2n-1) v}{4L}

f_n = \dfrac{n v}{4L}

f_n = \dfrac{n v}{2L}

f_n = \dfrac{v}{2Ln}