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Question

If the solar constant is 1.4 kW/m2 then solar energy recived by 1m2area in one hour is:

(a) 5040 J
(b) 504.0 kJ
(c) 5040 kJ
(d) 5.04 kJ


Solution

(c) 5040 kJ

Solar constant = 1.4 kW/m2  
          1 hour = 60 × 60 sec = 3600 sec
Therefore, energy = 1.4 kJ/s/m2 × 3600 s = 5040 kJ

Science
Lakhmir Physics 2013
Standard X

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