Question:
A circular hole of diameter $2.00 \mathrm{~cm}$ is made in an aluminium, plate at $0^{\circ}$
C. What will be the diameter at $100^{\circ} \mathrm{C}$ ? a for aluminium $=2.3^{\times 10^{-5} /{ }^{\circ} \mathrm{C}}$
Solution:
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