Heat TransferHard
Question
A substance when at high temperature emits wave lenght λ1, λ2, λ3, and λ4 only when this substance is at low temperature then it will absorb only following wave lengths.
Options
A.λ1
B.λ2
C.λ2 & λ3
D.λ1, λ2 λ3 & λ4
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