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Question 30822
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Elasticity, Thermal Expansion, Calorimetry and Heat Transfer: Linear Expansion MCQ

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Linear ExpansionEasyQuestion 30822

Question

A rod of length 1 m has α = 2×10⁻⁵ /°C. Extension for 50°C rise is:
  1. A
    0.5 mm
  2. B
    1 mm
    Correct
  3. C
    2 mm
  4. D
    0.1 mm

Correct answer

1 mm

Explanation

ΔL = L₀αΔT = 1 × 2×10⁻⁵ × 50 = 1×10⁻³ m = 1 mm.

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