# An open-ended pipe is 6 meters long. What is the wavelength of a first harmonic standing wave?

Jun 3, 2018

$\text{12 m}$

#### Explanation:

For an open pipe of length $\text{L}$ first harmonic is formed when

$\frac{\text{L" = "λ}}{2}$

So, wavelength of first harmonic for a $6 \setminus \text{m}$ long pipe is

λ = "2L"

color(white)(λ) = "2 × 6 m"

color(white)(λ) = "12 m"