InterviewSolution
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InterviewSolution
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Define coefficient of superficial expansion. Write its equation. |
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Answer» Solution :(i) The ratio of increase in area of BODY per DEGREE RISE in temperature to its unit area is called as coefficient of superficial EXPANSION . (ii) Coefficient of superficial expansion is DIFFERENT for different materials. (iii) The SI unit of Coeffficient of superficial expansion is `K^(-1)`. `(DeltaA)/(A_(0)) = alpha_(A)DeltaT implies alpha_(A) = (DeltaA)/(DeltaT.A_(0))` `DeltaA`- Change in area (Final area -initial area) `A_(0)`-Original area `DeltaT`-Change in temperature (Final temperature-Initial temperature) `alpha_(A)`- Coefficient of superficial expansion. |
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