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Questions  

The coefficient of linear expansion for a certain metal varies with temperature as α(T ) . If L0 is the initial length of the metal and the temperature of metal changed from T0 to T(T0 > T) then,

a
L=L0∫I0T α(T)dT
b
L=L01+∫T0T α(T)dT
c
L=L01−∫T0T α(T)dT
d
L>L0

detailed solution

Correct option is C

dLL0=−a(T)dt;  Integrate the equation

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