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A stationary wave is formed having 4 nodes along the $120 \mathrm{~cm}$ length of the string.
The wavelength of the wave is
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The wavelength of the wave is
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Verified Answer
The correct answer is:
$80 \mathrm{~cm}$
4 modes formed
$\begin{aligned} \therefore 3 \lambda / 2 &=120 \mathrm{~cm} \\ \lambda &=\frac{240}{3} \mathrm{~cm} \end{aligned} \Rightarrow \lambda=80 \mathrm{~cm}$
$\begin{aligned} \therefore 3 \lambda / 2 &=120 \mathrm{~cm} \\ \lambda &=\frac{240}{3} \mathrm{~cm} \end{aligned} \Rightarrow \lambda=80 \mathrm{~cm}$
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