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Sound — Science STD 9 — Question

Gujarat BoardEnglish MediumSTD 9ScienceSound2 Marks
Question
The given graph $($Fig.$)$ shows the displacement versus time relation for a disturbance travelling with velocity of $1500\ m s^{-1}$. Calculate the wavelength of the disturbance.
✓

Answer

From the graph
Time period, $\text{T} = 2 \times 10^{-6}s.$
Frequency, $\text{v}=\frac{1}{\text{T}}=5\times10^5\text{Hz.}$
Wavelength, $\lambda=\frac{\text{u}}{\text{v}}=5\times10^5\text{m}.$

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