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Discussion :: Heat and Mass Transfer

  1. If the temperature of a solid surface changes form 27°C to 627°C, then its emissive power changes in the ratio of

  2. A.

     3

    B.

     9

    C.

     270

    D.

     81

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    Workspace

    Answer : Option D

    Explanation :

    E2/E1 = (T2/T1)4 = 81.


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