Thetemperatureof perfect blackbody is 1000 Kand its areais 0.1 m^(2) . Ifsigma =5.67 xx 10^(-8) W m^(-2) K^(-4)calculate the heat radiated in 1 minute ?

Thetemperatureof perfect blackbody is 1000 Kand its areais 0.1 m^(2) .

1.	Thetemperatureof perfect blackbody is 1000 Kand its areais 0.1 m^(2) . Ifsigma =5.67 xx 10^(-8) W m^(-2) K^(-4)calculate the heat radiated in 1 minute ?
Answer» Solution :According to Stefan.s law if Eis theenergyradiated in 1 SEC byunit surfacearea then `E = sigma T^(4)` `therefore ` Total energy radiated , `E = A(sigma T^(4))t = 0.1 xx 5.67xx 10^(-8) xx 1000^(4) xx 60 = 34.02 xx 10^(4) J`