1. Tardigrade
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  4. The length of each steel rail is 10m in winter. The coefficient of linear expansion of steel is 0.000012/°C and the temperature increases by 15/°C in summer. The gap to be left between the rails

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Q. The length of each steel rail is 10m in winter. The coefficient of linear expansion of steel is $0.000012/^{\circ}C$ and "the temperature increases by $15/^{\circ}C$ in summer. The gap to be left between the rails

Thermal Properties of Matter

Solution:

Gap left = Change in length on heating
Gap $=$ Initial length $\times$ Coefficient of linear expansion $\times$ change in temperature
Gap $=10 \times 0.000012 \times 15 m$
$\Longrightarrow$ Gap $=0.0018 m$