Question:
A meter scale made of steel is calibrated at $20^{\circ} \mathrm{C}$ to give correct reading. Find the distance between 50 $\mathrm{cm}$ mark and $51 \mathrm{~cm}$ mark if the scale is used at $10^{\circ}$ C. Co-efficient of linear expansion of steel is $1.1 \times 10^{-5}$ $/^{\circ} \mathrm{C}$
Solution:
