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Two straight metallic stripes each of thickness t and length l are riveted together.Their coefficients of linear expansion are α 1 and α 2 .If they are heated through a temperature Δt,the bimetallic stripe will bend to form an arc of radius a. t(Δt)/(α 1 +α 2 ) b. t(Δt)/(α 2 -α 1 ) c. t(α 1 +α 2 )Δt d. t(α 2 -α 1 )Δt

Two straight metallic stripes each of thickness t and length l are riveted together.Their coefficients of linear expansion are α1 and α2.If they are heated through a temperature Δt,the bimetallic stripe will bend to form an arc of radius


a. t(Δt)/(α12)


b. t(Δt)/(α21)


c. t(α12)Δt


d. t(α21)Δt

Grade:12th Pass

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