Which of the following wavelengths could NOT be present as a standing wave in a 2 m long organ pipe open at both ends?
A) 4 m
B) 2 m
C) 1 m
D) 0.89 m
E) 0.5 m

Question

Quizplus · Accepted Answer

For a pipe open at both ends, the allowed wavelengths ($\lambda$) for standing waves are given by $\lambda = \frac{2L}{n}$, where $L$ is the length of the pipe and $n$ is a positive integer (1, 2, 3, ...). For a 2 m long pipe, the wavelengths can be 4 m, 2 m, 1 m, etc., but 0.89 m does not fit this pattern, making it the wavelength that cannot be present as a standing wave in the pipe.

Which of the Following Wavelengths Could NOT Be Present as a Standing