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Find the icrease in temperature of alumi...

Find the icrease in temperature of aluminium rod if it`s length is to be increased by `1%` . (`alpha` for alumunium =`25xx10^(-6)//^(@)C)`

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Coefficient of linear expansion of aluminium, `alpha =25 xx10^(-6) //^(@)C` we known that precentage increase in length `=("Increase in length")/("Original length") xx100 =(l_(2)-l_(1))/(l_(1)xx100 = alpha (t_(2)-t_(1)) xx100 ` [`therefore (l_(2)-l_(1))/(l_(1)) =alpha (t_(2)-t_(1))]` therefore Increasese in temperature `=("Percentage increase in length")/(alpha xx100) = (1)/(25xx10^(-6)xx100) = 400^(@)C`
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