When A Strip Made Of Iron (α1) And Copper (α2 > α1) Is Heated: 

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When a strip made of iron (α1) and copper 2 > α1) is heated: 


Correct option is

It bends with iron on concave side


As α1 < α2, hence (∆L)Fe < (∆L)Cu   

i.e., iron rod will bend concave side. 



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