Physics - Sound Wave Question with Solution | TestHub

A closed organ and an open organ tube are filled by two different gases having same bulk modulus but different densities ${\rho }_1$ and ${\rho }_{2^{\prime }}$, respectively. The frequency of $9^{\text{th }}$ harmonic of closed tube is identical with $4^{\text{th }}$ harmonic of open tube. If the length of the closed tube is 10 cm and the density ratio of the gases is ${\rho }_1:{\rho }_2=1:16$, then the length of the open tube is :