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The diagram below shows an instantaneous position of a string as a transverse progressive wave travels along it from left to right
\( \mathrm{P} \)
W
Which one of the following correctly shows the direction of the velocity of the points 1,2 and 3 on the string
\begin{tabular}{|c|c|c|c|}
\hline & 1 & 2 & 3 \\
\hline (a) & \( \rightarrow \) & \( \rightarrow \) & \( \rightarrow \) \\
\hline (b) & \( \rightarrow \) & \( \leftarrow \) & \( \rightarrow \) \\
\hline (c) & \( \downarrow \) & \( \downarrow \) & \( \downarrow \) \\
\hline (d) & \( \downarrow \) & \( \uparrow \) & \( \downarrow \) \\
\hline
\end{tabular}
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