Discussion :: Heat and Mass Transfer
- When α is absorptivity, ρ is reflectivity and τ is transmissivity, then for a diathermanous body,
A.
α = 1, ρ = 0 and τ = 0 |
B.
α = 0, ρ = 1 and τ = 0 |
C.
α = 0, ρ = 0 and τ = 1 |
D.
α + ρ = 1 and τ = 0 |
Answer : Option C
Explanation :
Diathermanous body is a body which transmits all the incident radiation without absorbing or reflecting.
(A body with transmitivity 1, reflectivity 0 and absorptivity 0) Air, up to certain extent can be considered as the diathermanous body because, it transmits all the radiation without hearing itself.
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