The coefficient of thermal expansion of the metal will be 1.4 x 10⁻⁵ °c.
What is thermal expansion?
Every material has its property of contraction or expansion by the change of temperature. The expansion and contraction of any material are indicated by a coefficient this coefficient is called the coefficient of thermal expansion.
Here we have the following data:-
l₁= 1.000 m
l₂ = 1.001 m
Δ = 70° C
The formula for calculating the coefficient of linear expansion will be:-
[tex]\alpha =\dfrac{\Delta l}{\Delta t\times l}[/tex]
By putting the values we will get the answer.
[tex]\alpha=\dfrac{0.0001}{70\times 1}= 1.4\times 10^{-5}[/tex]
Therefore the coefficient of thermal expansion of the metal will be 1.4 x 10⁻⁵ °c.
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