Two waves of same amplitude and same intensity interfere at one point. Phase difference between ...

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Two waves of same amplitude and same intensity interfere at one point. Phase difference between them is \( \theta \). Match the following two columns.
\begin{tabular}{ll|ll}
\hline & \multicolumn{1}{c|}{ Column I } & & Column II \\
\hline (a) Resultant amplitude for \( \theta=60^{\circ} \) & (p) & 2 times \\
(b) Resultant amplitude for \( \theta=120^{\circ} \) & (q) & 3 times \\
(c) Resultant intensity for \( \theta=90^{\circ} \) & (r) & 4 times \\
(d) Resultant intensity for \( \theta=0^{\circ} \) & (s) & None of these \\
\hline
\end{tabular}
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