if v1 is the resonance frequency of a pipe open at both ends and v2 the resonance frequency of a pipe open at, one end only and both are vibrating in the fundamental mode, and the pipes are of same length, then
if v1 is the resonance frequency of a pipe open at both ends and v2 the resonance frequency of a pipe open at, one end only and both are vibrating in the fundamental mode, and the pipes are of same length, then