2) Consider a large plane wall of thickness L-02 m, thermal conductivity k-12 Wim "C, and surface area A-15 m². The two sides of the wall are maintained at constant temperatures of T, 120°C and T,- 50°C. respectively. Determine (a) the variation of temperature within the wall and the value of temperature at x-0.1 m and (b) the rate of heat conduction through the wall under steady conditions Solation: