A metal rod of 3m expands by 1.0cm when heated through 200°C.find linear coefficent of metal
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(40.148-40.125)=coefficint of linear expantion*40.125*(45-20) (0.023)/(40.125*25)=coefficint of linear expantion coefficint of linear expantion=0.000022928 therefore coefficint of linear expantion=0.000022928
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