Solve this: Share with your friends Share 0 Aarushi Mishra answered this We know that rate of heat flowH=kAlT1-T2Temeprature difference across first, second and third rods are T1-ϕ1, ϕ1-ϕ2 and ϕ2-T2GivenH1=H2=H3⇒k1AT1-ϕ1l1=k2Aϕ1-ϕ2l2=k3Aϕ2-T2l3Comparing with ⇒k1AT1-ϕ1l1=k2Aϕ1-ϕ2l2=k3AA-Bl3we haveA=ϕ2B=T2 0 View Full Answer