Answer to Question #276589 in Physics for haze

Question

An organ pipe is closed at one end and open at the other end. It is 0.8 m long. When a standing wave of the longest possible wavelength is formed, what is the frequency of the standing wave in Hz if the speed of sound is 340 m/s? (Hint: First find the longest possible wave length and then calculate its frequency).

Answer 1

The longest possible wavelength:

$$\lambda=4L=3.2\text{ m}.$$

The frequency:

$$f=v/\lambda=106.3\text{ Hz}.$$