A rod A and a rod B of different materia...

A rod A and a rod B of different materials differ in length by 5 cm at all temperatures . What are their lengths at `0^@C` if the coefficients of linear expansion of A and B are `12 xx 10^(-6)//^@C` and `18 xx 10^(-6)//^@C` respectively ?

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A metal bar is 52.302 cm long at 18^@C and 25.359 cm long at 98^@C . What is the coefficient of linear expansion of the metal ?

What should be the length of steel abd copper rods at 0^@C so that the difference in their lengths is 5.0 cm at all temperatures. Coefficient of linear expansion of copper is 1.7 xx 10^(-5) //^@ C and that of steel is 1.1 xx 10^(-5) //^@ C .

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