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Question 30884
JEE Physics · Hard

Elasticity, Thermal Expansion, Calorimetry and Heat Transfer: Thermal Expansion Advanced MCQ

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Thermal Expansion AdvancedHardQuestion 30884

Question

A metal ball just fits through a metal ring at 20°C. If ring is heated to 100°C, ball:
  1. A
    Fits through easily
  2. B
    Does not fit through
  3. C
    May or may not fit, depending on α of each
    Correct
  4. D
    Always fits

Correct answer

May or may not fit, depending on α of each

Explanation

If ring's α > ball's α, ring expands more and ball fits through. If ball's α > ring's α, ball expands more than ring and may not fit. The relative expansion matters.

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