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Grade 12th PassThermal Physics

Two uniform bars of length L₁and L₂with the coefficient of linear expansion α₁ and α₂ are joined to form a longer rod of length L_{1 +}L_{2 .}The effective coefficient of linear expansion of the composite bar is

shlok jain

13 Years agoGrade 12th Pass

1 Answer

Shivam Dimri

13 Years ago

I dont get it why you people post questions twice??

delta l1 = l1 * a1 * deltatheta

similarylfor other one

combining both we get

alpha effective = ((alpa1 * l1 + alpha 2 * l2 ))/(l1+l2)

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