Physics

Problem

Two perfect blackbodies are kept at different temperatures. a. (i) Find the ratio of their rates of energy emission per unit area if their temperatures are

800\,\text{K}

and

1200\,\text{K}

respectively. b. (ii) If the cooler body has an area of

2.0\,\text{m}^{2}

, what must be the area of the hotter body so that both bodies emit the same total radiant power?

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