- Holes in materials expand or contract with temperature changes as if they were filled with the material itself. - The linear thermal expansion formula is L = L₀(1 + αΔT). - A decrease in size corresponds to a negative change in temperature (cooling).
A square shaped hole is punched in a metal sheet whose linear thermal expansion coefficient is 1 × 10⁻³ per °C. The size of the hole will decrease by 10%, when
Asked in OPSC CS Prelims 2023 · Topic: Heat and Thermodynamics (Thermal Expansion (Solids, Liquids, Gases))
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