Practice portal › Thermal Properties of Matter › Radiation, Stefan's Law and Cooling
Asked in CBSE AIPMT 1993 · Stefan-Boltzmann law
Given: the sun's absolute temperature doubled, with its size and its distance unchanged.
Idea: a black body's output follows Stefan's law, and the flux reaching the earth is that output divided by a fixed area.
E∝ T⁴
(E')/E=((2T)/T)⁴=2⁴
=16
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