The displacement-time graphs for two sound waves \( A \) and \( B \...

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The displacement-time graphs for two sound waves \( A \) and \( B \) are shown in the figure, then the ratio of their intensities
\( \mathrm{P} \) \( I_{A} / I_{B} \) is equal to

W
(a) \( 1: 4 \)
(b) \( 1: 16 \)
(c) \( 1: 2 \)
(d) \( 1: 1 \)
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