Question

two identical, open ended organ pipes are placed 5.47 m apart on opposite corners of an outdoor stage. both pipes play the same musical note at 325 hz. how many destructive minima occur along the straight line from one pipe to the other? Use 344 m/s for the speed of sound.

Answer 1

The frequency of the musical note is,

The path difference is the distance between two organ pipes,

Speed of the sound is,

The wavelength of the sound waves is,

We know that if is the number of distructive minimas then,

Since n has to be an integer, we can approximate it to