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[WE-I3:An" aluminium measuring rod,which...

[WE-I3:An" aluminium measuring rod,which is"],["correct at "5^(@)C" measures the length of a line"],[" as "80cm" at "45^(@)C" .If thermal coefficient of "],[" linear expansion of aluminium is "2.50times10^(-5)/C],[" The correct length of the line is "],[" Sol: "L_(2)=L_(1)+L_(1)alpha Delta t],[L_(2)=80+(80)(2.50times10^(-5))(40)=80.08cm]

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