Which statements are correct for an ideal organ pipe closed at one end?

Question

G1 Physics · Accepted Answer

A closed end cannot support longitudinal displacement, so it is a displacement node. An open end is approximately a displacement antinode. The boundary conditions require Lₑ = (2n−1)λₙ/4. Thus, fₙ = (2n−1)v/(4Lₑ), so only odd multiples of the fundamental are present. Therefore all four statements are correct.