An object has the shape of cubical box of side 10cm, with no top cover. The box is placed inside a room whose dimensions are much larger than those of the box. All the five surfaces of box are at a temp of 5000C and have an emissivity of 0.6. The walls of the room are t 250C and have an emissivity of 0.4. All these surfaces can be assumed to be diffuse-gray. Find the net radiative heat loss from the inner surface of the box to the walls of the room. Stephen Boltzmann constant 5.67 ´ 10–8 W/m2K4. View factor between two parallel square plates placed directly opposite to each other is 0.2.