Question:medium
A surface behaves as a perfect black body at 600 K. Another black body is at 300 K. The ratio of emissive powers is:
A surface behaves as a perfect black body at 600 K. Another black body is at 300 K. The ratio of emissive powers is:
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Radiation heat transfer is highly sensitive to temperature because of the fourth-power dependence.
Doubling the absolute temperature of a black body increases its radiation emission by $2^4 = 16$ times.
Doubling the absolute temperature of a black body increases its radiation emission by $2^4 = 16$ times.
Updated On: Jul 9, 2026
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The Correct Option is D
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