Two thin metal strips each of $$2mm$$ thick, one of brass and the other of iron are fastened together parallel to each other, to form a bimetallic strip. If the strips are of equal length at $$0$$°c . The radius of the arc formed by the bimetallic strip when heated to C is (Coefficient$$ of linear expansion of brass $$=$$ $$19$$×$$10$$−$$6/$$∘C and of iron $$=$$ $$12$$×$$10$$−$$6/$$∘C $$)

Question

Two thin metal strips each of $$2mm$$ thick, one of brass and the other of iron are fastened   together  parallel to each other, to form  a bimetallic strip. If the strips are  of equal  length  at $$0$$°c . The radius of the arc  formed  by the  bimetallic strip when heated to C is (Coefficient$$ of linear expansion of brass $$=$$  $$19$$×$$10$$−$$6/$$∘C  and of iron $$=$$ $$12$$×$$10$$−$$6/$$∘C $$)

Infinity Learn · Accepted Answer

$$R=d$$α$$1$$−α$$2$$Δ$$t=2$$×$$10$$−$$37$$×$$10$$−$$6$$×$$80=1280$$×$$106$$×$$10$$−$$3=1000280=3.57m$$

Remember concepts with our Masterclasses.

Ready to Test Your Skills?

free study material