Q. Depending on the radiating properties, a body will be black when (where a = absorptivity, p == reflectivity, X = transmissivity.) (Solved)
1. p = 0, x = 0 and a = 1
2. p= l,T = 0anda = 0
3. p = 0, x = 1 and a = 0
4. x = 0, a + p = 0
5. a = 0,x + p= 1.
- a. p = 0, x = 0 and a = 1