Question

what do you mean by linear expansion. Derive the expression for coefficient of linear expansion. ​

Answer 1

$\large\mathcal{\red {\underline {\overline {\mid {\orange {Answer}}\mid}}}}$

Thermal Expansion in Two Dimensions

Thermal Expansion in Two DimensionsFor small temperature changes, the change in area ΔA is given by ΔA = 2αAΔT, where ΔA is the change in area A, ΔT is the change in temperature, and α is the coefficient of linear expansion, which varies slightly with temperature

Answer 2

Answer:

Linear thermal expansion is ΔL = αLΔT, where ΔL is the change in length L, ΔT is the change in temperature, and α is the coefficient of linear expansion, which varies slightly with temperature. The change in area due to thermal expansion is ΔA = 2αAΔT, where ΔA is the change in area.