Consider a rectangular sheet of solid material of length $l = 9$ cm and width $d = 4$ cm. The coefficient of linear expansion is $\alpha = 3.1 imes 10^{-5}$ K$^{-1}$ at room temperature and one atmospheric pressure. The mass of sheet $m = 0.1$ kg and the specific heat capacity $C_s = 900$ J kg$^{-1}$ K$^{-1}$. If the amount of heat supplied to the material is $8.1 imes 10^2$ J then change in area of the rectangular sheet is :-

Question

Consider a rectangular sheet of solid material of length $l = 9$ cm and width $d = 4$ cm. The coefficient of linear expansion is $\alpha = 3.1 	imes 10^{-5}$ K$^{-1}$ at room temperature and one atmospheric pressure. The mass of sheet $m = 0.1$ kg and the specific heat capacity $C_s = 900$ J kg$^{-1}$ K$^{-1}$. If the amount of heat supplied to the material is $8.1 	imes 10^2$ J then change in area of the rectangular sheet is :-

Accepted Answer

$2.0 	imes 10^{-7}$ m$^2$

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