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Grade 11Thermal Physics

The density of a solid decreases by 0.5percent when heated from 0 degree Celsius to 100 degree Celsius. What is coefficient of linear expansion of solid?

Ajay

8 Years agoGrade 11

1 Answer

Eshan

8 Years ago

$\dfrac{d_f}{d_i}=0.995$
$\implies \dfrac{V_i}{V_f}=0.995$
$V_f=V_i(1+\gamma\Delta T)$
$\implies \gamma=5\times 10^{-5}/^{\circ}C=3\alpha$
$\implies \alpha=\dfrac{5}{3}\times 10^{-5}/\circ C$

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