The ratio between the wavelengths of the air column vibrating in the first two modes in an open orga

Question

The ratio between the wavelengths of the air column vibrating in the first two modes in an open organ pipe is\

Professor PC Thomas Classes · Answer

(a) : In open organ pipe,\ $\lambda_{1}=2 L$ first mode\ $\lambda_{2}=L$ second mode\ So, $\frac{\lambda_{1}}{\lambda_{2}}=\frac{2 L}{L}=2: 1$\