Question

The first overtone in a closed pipe has a frequency

• A. Same as the fundamental frequency of an open tube of same length
• B. Twice the fundamental frequency of an open tube of same length
• C. Same as that of the first overtone of an open tube of same length
• D. None of the above

Answer 1

Answer: (D)

None of the above

Answer 2

First overtone for closed pipe = $\frac{3v}{4l}$

Fundamental frequency for open pipe = $\frac{v}{2l}$

First overtone for open pipe = $\frac{2v}{2l}$.