NCERT Example 10.2 - Thermal Properties of Matter
Question: A blacksmith fits an iron ring (diameter 5.231 m at 27 C) onto a rim (diameter 5.243 m). To what temperature must the ring be heated? alpha_l(iron) = 1.20 x 10^-5 K^-1.
Answer: Ring must be heated to **about 218 C**.
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