An ideal black body at room temperature is th | vedclass

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Question

(A) Initially,an ideal black body absorbs all the radiant energy incident on it,making it appear as the darkest object in the furnace.According to Kir

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Initially it is the darkest body and at later times the brightest.

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(A) Initially,an ideal black body absorbs all the radiant energy incident on it,making it appear as the darkest object in the furnace.According to Kirchhoff's law of radiation,a good absorber is also a good emitter. Therefore,as the black body heats up to the temperature of the furnace,it radiates the maximum amount of energy compared to other bodies at the same temperature.Once the black body reaches thermal equilibrium with the furnace,it emits the most intense radiation,making it appear the brightest.

An ideal black body at room temperature is thrown into a furnace. It is observed that:

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