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The sun radiates electromagnetic energy at the rate of 3.9 cross times 10 to the power of 26 end exponent W Its radius is 6.96 cross times 10 to the power of 8 end exponent m The intensity of sun light at the solar surface will be (in W/m2)

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  1. 1.4 cross times 10 to the power of 4 end exponent    
  2. 2.8 cross times 10 to the power of 5 end exponent    
  3. 64 cross times 10 to the power of 6 end exponent    
  4. 5.6 cross times 10 to the power of 7 end exponent    

    Answer:The correct answer is: 64 cross times 10 to the power of 6 end exponent

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