A blackbody of surface area 20 cm2is heated to a temperature of 600 K and is then placed on an insulated stand in a room at temperature 300 K. The initial rate of loss of heat from the body to the room is.....pls give a breif explaination

Dear Student,

Rate of heat loss can be obtained from stefan-boltzmann relation

P=eσAT4-TC4WhereP= Rate of heat flowe=emissivity (=1 for ideal radiator )A=areaT=temperature of radiatorTC=temperature of surroundingThus substituting the given valuesP= 1×5.67×10-8×20×10-4×6004-3004P=13.78 W (  J/s)


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