Q24. A closed and an open organ pipe have same lengths. If the ratio of frequencies of their seventh overtones is $\left( \frac { a - 1 } { a } \right)$ then the value of a is $\_\_\_\_$
Q24. A closed and an open organ pipe have same lengths. If the ratio of frequencies of their seventh overtones is $\left( \frac { a - 1 } { a } \right)$ then the value of a is $\_\_\_\_$\\