Question:
A metal scale made of steel reads accurately at $20^{\circ} \mathrm{C}$. In a sensitive experiment, distances accurate up to $0.055 \mathrm{~mm}$ in $1 \mathrm{~m}$ are required. Find the range of temperature in which the experiment can be performed with this meter scale. Coefficient of linear expansion $=11 \times 10^{-6} /{ }^{\circ} \mathrm{C}$
Solution:
