Solve this-7- Two identical rectangular strips- one of copper and the nbsp-other of steel- are rivetted together to form a bimetallic nbsp-strip - -945-copper gt- -945-steel- On heating- this strip will nbsp-a- remain straight nbsp-b- bend with copper on convex side nbsp-c- bend with steel on convex side nbsp-d- get twisted- nbsp- nbsp- nbsp-

Dear Student nbsp; Two metallic strips with different nbsp; #945; #160;means #160;that #160;on #160;heating #160;the #160;expansion #160;in ...

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Standard VIII

Physics

Expansion of Solids

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Question

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7. Two identical rectangular strips, one of copper and the other of steel, are rivetted together to form a bimetallic strip ( $α$ _copper > $α$ _steel). On heating, this strip will
(a) remain straight
(b) bend with copper on convex side
(c) bend with steel on convex side
(d) get twisted.

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Solution

Dear Student
Two metallic strips with different $α m e a n s t h a t o n h e a t i n g t h e e x p a n s i o n i n t w o c a s e s w i l l b e d i f f e r e n t . T h e e x p a n s i o n d e p e b d s o n t h e t e m [r a t u r e d i f f e r e n c e a n d t h e v a l u e o f α T h e m a t e r i a l w i t h m o r e α w i l l h a v e m o r e e x p a n s i o n w h i c h m e a n s t h e b i m e t t a l i c s t r i p w i l l b e n d t o w a r d s s t e e l s i d e . R E G A R D S$

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solve this: 7. Two identical rectangular strips, one of copper and the other of steel, are rivetted together to form a bimetallic strip (αcopper > αsteel). On heating, this strip will (a) remain straight (b) bend with copper on convex side (c) bend with steel on convex side (d) get twisted.