A uniform circular tube closed at one end is an example of what kind of resonance?
See the explanation below
A closed cylindrical air column will produce resonant standing waves at a fundamental frequency and at odd harmonics.
The closed end is constrained to be a node of the wave and the open end is of course an antinode.
This makes the fundamental mode such that the wavelength is four times the length of the air column.
The constraint of the closed end prevents the column from producing the even harmonics.