Q. Absorptivity of a perfect black body is unity. Which of the following has maximumabsorptivity? (Solved)
1. Aluminium foil
2. Refractory bricks
3. Iron plate
4. Coke breeze
- d. Coke breeze
1. Aluminium foil
2. Refractory bricks
3. Iron plate
4. Coke breeze