Question

The coefficient of linear expansion of copper is 17 x 10-6 °C. What will be
the increase in length (or change in length) of a copper wire 10 m long
when heated from 30 °C to 60 °C?
1) 0.051 m 2) 0.0051 m 3) 1.5 m
4) 2.1 m​

Answer 1

Answer:

5.1 x $10^{-3}$m

Explanation:

ΔL=L₀α(ΔT)

=10(17 x 10-6)(30)=5.1 x $10^{-3}$m

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