temperature of a body is 400 C assuming the surrounding temperature to be negligable.At what temperature will body emit double radiation

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$D e a r s t u d e n t R = k T^{4} f i r s t c a s e R = k {(623.15)}^{4} s e c o n d c a s e 2 R = k T^{4} 2 k {(623.15)}^{4} = k T^{4} T = 800 K a p p r o x = 526 C a p p r o x$

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temperature of a body is 400 C assuming the surrounding temperature to be negligable.At what temperature will body emit double radiation

Dear studentR=kT4first caseR=k623.154second case2R=kT42k623.154=kT4T=800 K approx=526 C approx

$D e a r s t u d e n t R = k T^{4} f i r s t c a s e R = k {(623.15)}^{4} s e c o n d c a s e 2 R = k T^{4} 2 k {(623.15)}^{4} = k T^{4} T = 800 K a p p r o x = 526 C a p p r o x$