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The superposing waves are represented by the following equations :
\( \mathrm{P} \)
\[
y_{1}=5 \sin 2 \pi(10 t-0.1 x), y_{2}=10 \sin 2 \pi(20 t-0.2 x)
\]
W
Ratio of intensities \( \frac{I_{\max }}{I_{\min }} \) will be [AIIMS 1995; KCET 2001]
(a) 1
(b) 9
(c) 4
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