A metal rod lenth `L_(0)` whose coefficient of linear expansion `alpha = 10^(-3) ^(0)C^(-1)` is heated such that its temperature changes by `1000K` assum-ing `alpha` is constant during the temperature change `(e =2.7)`A. Final length of the rod is greater than `2L_(0)`B. Final length of the rod is greater than `2.5L_(0)`C. Final length of the rod is greater than `3L_(0)`D. increase in length of rod is `L_(0)`

A metal rod lenth `L_(0)` whose coefficient of linear expansion `alpha

1.	A metal rod lenth `L_(0)` whose coefficient of linear expansion `alpha = 10^(-3) ^(0)C^(-1)` is heated such that its temperature changes by `1000K` assum-ing `alpha` is constant during the temperature change `(e =2.7)`A. Final length of the rod is greater than `2L_(0)`B. Final length of the rod is greater than `2.5L_(0)`C. Final length of the rod is greater than `3L_(0)`D. increase in length of rod is `L_(0)`
Answer» Correct Answer - A::B `dL = alphaLdt` `int_(L_(0))^(L)(dL)/(L)=int_(0)^(T)alphadt` `L = L_(0)e^(alphaT) = 2.7L_(0)`

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