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Two straight metallic strips each of thi...

Two straight metallic strips each of thickness t and length l are rivetted together. Their coefficients of linear expansions are` alpha_(1) "and" alpha_(2) `. If they are heated through temperature `DeltaT`, the bimetallic strip will bend to form an arc of radius

A

`1/(alpha_(1)+alpha_(2))Deltat`

B

`t/((alpha_(2)-alpha_(1))Deltat`

C

`t(alpha_(1)+alpha_(2))Delta t`

D

`t(alpha_(2)-alpha_(1))Delta t`

Text Solution

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The correct Answer is:
B
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