Consider a system of three connected strings, $\mathrm{S}_1, \mathrm{~S}_2$ and $\mathrm{S}_3$ with uniform linear mass densities $\mu \mathrm{kg} / \mathrm{m}$, $4 \mu \mathrm{~kg} / \mathrm{m}$ and $16 \mu \mathrm{~kg} / \mathrm{m}$, respectively, as shown in the figure. $S_1$ and $S_2$ are connected at the point $P_{\text {, }}$ whereas $S_2$ and $S_3$ are connected at the point $Q$, and the other end of $S_3$ is connected to a wall. A wave generator 0 is connected to the free end of $\mathrm{S}_1$. The wave from the generator is represented by $y=y_0 \cos (\omega t-k x) c m$, where $y_0 \omega$ and k are constants of appropriate dimensions. Which of the following statements is/are correct:
