Physics - Sound Wave Question with Solution | TestHub

In fundamental mode the length of the closed tube is $\frac{\lambda }{4}$ Time required to travel a distance $\frac{\lambda }{4}$ is $\mathrm{t}$. Hence time required to travel a distance $\lambda$ will be $4\mathrm{t}$. $\therefore$ Time period $\mathrm{T}=4\mathrm{t}$ Frequency, $\mathrm{n}=\frac{1}{\mathrm{T}}=\frac{1}{4\mathrm{t}}=\frac{0.25}{\mathrm{t}}$