The coefficient of linear expansion of a metal is \( \mathrm{P} \) ...

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The coefficient of linear expansion of a metal is
\( \mathrm{P} \) \( 1 \times 10^{-5} /{ }^{\circ} \mathrm{C} \). The percentage increase in area of a

W square plate of that metal when it is heated through \( 100^{\circ} \mathrm{C} \) is
(1) \( 0.02 \% \)
(2) \( 0.1 \% \)
(3) \( 0.001 \% \)
(4) \( 0.2 \% \)
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