Open Organ Pipe

The fundamental frequency in an open organ pipe is equal to the third harmonic of a closed organ pipe . If the length of the closed organ pipe . If the length of the closed organ of a closed organ pipe is 20 cm , the length of the open organ pipe is

A sonometer wire of certain length L between the bridges resonates with an open organ pipe. If L is now made twice, will the wire be still able to resonate with the same open organ pipe ? Give reason in support of your answer.

At the open end of organ pipe