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प्रश्न
State the Stefan-Boltzmann law.
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उत्तर
The Stefan Boltzmann law describes the power radiated (R) from a black body in terms of its temperature (T). According to the Stefan Boltzmann law, “The rate of emission of radiant energy per unit area or the power radiated per unit area of a perfect blackbody is directly proportional to the fourth power of its absolute temperature”.
R = σT4,
where σ is Stefan’s constant and is equal to 5.67 × 10-8 W m-2 K-4.
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संबंधित प्रश्न
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