A bimetallic strip is formed out of 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 strips increases by $\Delta T$ and the strip bend to from an arc of radius R. Then R is proportional to : - Clay6.com, a Free resource for your JEE, AIPMT and Board Exam preparation

A bimetallic strip is formed out of 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 strips increases by $\Delta T$ and the strip bend to from an arc of radius R. Then R is proportional to :