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Discussion :: Heating and Welding

  1. A perfect black body is one that

    2. A.

     Transmits all incident radiations
    B.

     Absorbs all incident radiations
    C.

     Reflects all incident radiations
    D.

     Absorbs, reflects and transmits all incident radiations

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    Answer : Option B

    Explanation :

    Explanation Not Provided

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