Which of the following diagrams correctly illustrates the mode of oscillation of air in a tube for the first overtone?
( The diagrams above are meant to help you in answering this question)
- A
-
B
- C
- D
The correct answer is: B
Explanation
The diagram above is a full wavelength and the length of an open pipe during first overtone equals one wavelength i.e. l = Ξ»