A bimetallic strip is formed by two identical strips, one of copper and the other of brass. The coefficients of linear expansion of the two metals are \alpha_{c} and \alpha_{B}. On heating, the temperature of the strip goes up by ∆ {T} and the strip bends to from an arc of radius of curvature {R}. Then {R} is

inversely proportional to ∆ {T}

proportional to |\alpha_{B}-\alpha_{C}|

inversely proportional to ∣ \alpha_{B}-\alpha_{C}|

JEE Advanced 2020 Full Test 3 Paper 2

Question : 8 of 54

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A bimetallic strip is formed by two identical strips, one of copper and the other of brass. The coefficients of linear expansion of the two metals are αc and αB. On heating, the temperature of the strip goes up by ∆T and the strip bends to from an arc of radius of curvature R. Then R is

proportional to ∆T
inversely proportional to ∆T
proportional to |αB−αC|
inversely proportional to ∣αB−αC|

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