Aplane wall with constant properties is initially at a uniform temperature to. suddenly, the surface at x = l is exposed to a convection process with a fluid at t[infinity](> to) having a convection coefficient h. also, suddenly the wall experiences a uniform internal volumetric heating q that is sufficiently large to induce a maximum steadystate temperature within the wall, which exceeds that of the fluid. the boundary at x = 0 remains at to.