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Discussion :: Heat and Mass Transfer

  1. If the energy radiated per second per sq. cm. of the surface for wave lengths lying between λ, and λ + dλ is represented by (eλ.dλ), then eλ is called

    2. A.

     Absorptive power
    B.

     Emissive power
    C.

     Emissivity
    D.

     None of these

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    Answer : Option B

    Explanation :

    If the energy radiated per second per sq. cm. of the surface for wave lengths lying between λ, and λ + dλ is represented by (eλ.dλ), then eλ is called Emissive power

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