Linear expansion coefficient α = 2×10⁻⁵/°C. Length increase for 1 m rod heated 50°C:

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ΔL = L₀αΔT = 1×2×10⁻⁵×50 = 100×10⁻⁵ = 10⁻³ m = 1 mm. Direct expansion formula application. Memory tip: 'ΔL = LαΔT; convert result to required units'. Tests thermal expansion calculation with unit conversion, frequently appearing in competitive exams.

Linear expansion coefficient α = 2×10⁻⁵/°C. Length increase for 1 m rod heated 50°C: MCQ with Answer and Explanation

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