For a certain organ pipe, the first three resonance frequencies are in the ratio of \(1: 3: 5\) ....

For a certain organ pipe, the first three resonance frequencies are in the ratio of \(1: 3: 5\) respectively. If the frequency of fifth harmonic is \(405 Hz\) and the speed of sound in air is \(324 ms ^{-1}\) the length of the organ pipe is_____ \(m\). 📲PW App Link - bit.ly/YTAI_PWAP 🌐PW Website - www.pw.live