The radius of a ring is R and its coefficient of linear expansion is α. If the temperature of ring
increases by ∆θ then its circumference will increase by
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Answer:
L=2πr
ΔL/L =αΔT
ΔL=LαΔT
ΔL=2πrαΔT
ΔL=2πrαθ (∵ΔT=θ)
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