Physics-
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Question

The sun delivers 103W/m2 of electromagnetic flux to the earth’s surface. The total power that is incident on a roof of dimensions 8m´20m, will be -

  1. 6.4 cross times 10 to the power of 3 end exponentW    
  2. 3.4 cross times 10 to the power of 4 end exponentW    
  3. 1.6 cross times 10 to the power of 5 end exponentW    
  4. none of these    

The correct answer is: 1.6 cross times 10 to the power of 5 end exponentW

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