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Which formula to use in these type of questions. Please give me solution as well as the formula

Which formula to use in these type of questions. Please give me solution as well as the formula

Question Image
Grade:11

1 Answers

Arun
25763 Points
3 years ago
Dear Preeti 
 
Use 
E = \sigma T4
T is in kelvin
When you put this
You get
E = \sigma (546)4
And 
E2 = \sigma (273)4
Hence
E2/E = 1/16
E2 = E/16
 
Regards
Arun (askIITians forum expert)

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