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JEE PHYSICS MCQ: THERMAL PROPERTIES OF MATTER

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A black body radiates energy at the rate of E  Wm−2E\,\,W{m^{ - 2}} at a high temperature T K. When the temperature is reduced to (T2)K\left( {\frac{T}{2}} \right)K the radiant energy is
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Correct option: D
E16\frac{E}{16}
Option D (E16\frac{E}{16}) is correct because according to Stefan's law, the radiant energy is proportional to the fourth power of the temperature, so when the temperature is halved, the energy becomes 1/16th.

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