A composite wall (figure 2) consists of two different materials and their interface has a contact resistance of 0 . C.m2/W. The composite wall is perfectly insulated at the top and bottom surfaces, and each individual wall area (into the paper) is 1m2. The interface contact area can be taken as 0.8m2. The composite wall separates two different fluids as shown in figure 2 . Following information is available: T00,1=30C,T00,2=10C,h1=10W/(m2,C),h2=50W/(m2.C), R1=0.01C/W,R2=0.1C/W,L1=1cm,L2=2L1, Ignoring radiation, calculate 4.1 heat transfer rate (10 points) 4.2 surface temperature of each wall exposed to corresponding fluid