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[" 8.A uniform metal rod fixed at its en...

[" 8.A uniform metal rod fixed at its ends of "2mm^(2)" cross-section is cooled from "40^(@)C" to "2cm^(2)B" ."],[" coefficient of the linear expansion of the rod is "12times10^(-6)" per degree celsius and its Yaxy "],[" modulus of elasticity is "10^(11)N/m^(2)" .The energy stored per unit volume of the rod is "],[[" (a) "2880J/m^(3)," (b) "1500J/m^(3)],[" (c) "5760J/m^(3)," (d) "1440J/m^(3)]]

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