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Two thin metal strips, one of brass and ...

Two thin metal strips, one of brass and the other of iron are fastened together parallel to each other. Thickness of each strip is 1 mm. If the strips are of equal length at `0^(@)C`. The radius of the are formed by the bimetallic strip when heated to `80^(@)C` is (Coefficient of linear expansion of brass = `19xx10^(-6)//""^(@)C` & of iron = `12xx10^(-6)//""^(@)C`).

A

`1.78m`

B

`2.67m`

C

`3.12m`

D

`4.56m`

Text Solution

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The correct Answer is:
A
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