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Consider two surfaces, one absolutely black and the other non-black. These surfaces are arranged parallel to each other and so close that the radiation of one falls totally on the other. Choose the correct option
  • a)
    1 denotes the radiant energy E emitted by the non-black surface impinges on the black surface
  • b)
    1 denotes the radiant energy E emitted by the black surface impinges on the non-black surface
  • c)
    2 and 3 denotes the quantity α E b
  • d)
    4 denotes the quantity (1 – α) E b
Correct answer is option 'A'. Can you explain this answer?
Verified Answer
Consider two surfaces, one absolutely black and the other non-black. T...
The radiant energy E emitted by the black surface strikes the non-black surface. If the non-black surface has absorptivity α, it will absorb α E b radiations.
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Consider two surfaces, one absolutely black and the other non-black. These surfaces are arranged parallel to each other and so close that the radiation of one falls totally on the other. Choose the correct optiona)1 denotes the radiant energy E emitted by the non-black surface impinges on the black surfaceb)1 denotes the radiant energy E emitted by the black surface impinges on the non-black surfacec)2 and 3 denotes the quantity α Ebd)4 denotes the quantity (1 – α) EbCorrect answer is option 'A'. Can you explain this answer?
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