Define coefficient of cubical (volume) expansion of a solid. State its unit and dimensions.
Define coefficient of cubical (volume) expansion of a solid. State its unit and dimensions.
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(i) Coefficient of cubical (volume) expansion: Coefficient of cubical (volume) expansion of a solid is defined as increase in volume per unit original volume at O °C per degree rise in temperature.
It is denoted by γ and is given by,
γ = \(\frac{V_2-V_1}{V_1(T_2-T_1)}\)
where,
V1 = Volume of solid at T1 °C,
V2 = Volume of solid at T2 °C
(ii) Dimensions: [L0M0T0K-1]
[Note: Units and dimension of areal expansion in solid (β) and cubical expansion in solid (γ) are same as that of linear expansion in solid (α).]
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