Questions
If the radius of a star is R and it acts as a black body, what would be the temperature of the star, in which the rate of energy production is Q?
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Correct option is A
If r is the radius of the star and T is temperature, then the energy emitted by the star per second through radiation in accordance with Stefan's law will be given byAσT4 = 4πr2σT4Q = 4πR2σT4 ⇒ T = (Q4πR2σ)14Similar Questions
For a black body at temperature 727°C, its radiating power is 60W and temperature of surrounding is 227° C. If temperature of black body is changed to 1227°C, then its
radiating power will be :
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