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Thermal Physics

Two straight metallic stripes each of thickness t and length l are riveted together.Their coefficients of linear expansion are α1 and α2.If they are heated through a temperature Δt,the bimetallic stripe will bend to form an arc of radius

a. t(Δt)/(α1+α2)

b. t(Δt)/(α2-α1)

c. t(α1+α2)Δt

d. t(α2-α1)Δt

Profile image of Abc
11 Years agoGrade
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1 Answer

Profile image of Abhishek Kumar
11 Years ago
Take length of radius same (neglect t here).
Use \theta = l/r
Use l values for the two as r=R for both.

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