Define coefficient of linear expansion of solid. State its unit and dimensions.
Define coefficient of linear expansion of solid. State its unit and dimensions.
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1. The coefficient of linear expansion of a solid is defined as increase in the length per unit original length at 0 °C per degree rise in temperature.
It is denoted by α and given by,
α = \(\frac{l_2-l_1}{l_1(T_2-T_1)}\)
where l1 = initial length at temperature T1 °C
l2 = final length at temperature T2 °C
2. Unit: °C-1 or K-1
3. Dimensions: [L0M0T0K-1]
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