A meter scale is made up of steel and measures correct length

Question:

A meter scale is made up of steel and measures correct length at $16^{\circ} \mathrm{C}$. What will be the percentage error if this scale is used (a) on a summer day when the temperature is $46^{\circ} \mathrm{C}$ and (b) on a winter day when the temperature is $6^{\circ} C_{\text {? Coefficient of linear expansion of steel }=11} \times 10^{-6} /{ }^{\circ} \mathrm{C}$

Solution:

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