A thin cylindrical metal rod is bent into a ring with a small gap as shown in figure. On heating the system

Engineering

Physics

Thermal Expansion

Question

θ decreases, r and d increases

θ is constant,

θ increases

d & r increases

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d' = d(1 + αΔT) α = +ive (coefficient of linear expansion)
r' = r(1 + αΔT) α = +ive (coefficient of linear expansion)

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