24 A perfectly black body radiates 25 joule sec at 600 K The

Last updated: 5/28/2023

24 A perfectly black body radiates 25 joule sec at 600 K The temperature at which an ordinary body of same area and emissivity 0 0256 would have same rate of emission is b 1000 K a 1200 K c 900 K d 1500 K 5 Two concentric perfectly black spheres are maintained at temperatures 200 K and 300 K respectively If the net rate of energy transfer per unit area between two spheres is 56x10watt im K