Why do long pipes make a low sound?

Long pipes produce a low sound because they have a longer wavelength, which corresponds to lower frequencies. When air vibrates within a long pipe, it creates standing waves, and the fundamental frequency (the lowest tone) is determined by the length of the pipe. The longer the pipe, the lower the frequency of the sound produced, resulting in deeper tones. This principle is utilized in Musical Instruments like tubas and bassoons, where longer lengths yield lower pitches.