Solar Energy Questions with solutions MCQs

1. How much solar energy will be received by 1m2 area in one hour, if the solar constant were 1.4 kilowatt per sqyare metre?

A

1.4 KJ

B

140 KJ

C

1400 KJ

D

5040 KJ

Solar Energy Geography
Correct Answer : D
Explanation :

The value of Solar constant = 1.4kW/m<sup>2</sup> = 1.4 kJ/s/m<sup>2</sup> .<br> The Solar energy received in 1 hour on 1 m<sup>2</sup> of Area = Value of Solar Constant x Time in Seconds<br> Area = 1 m<sup>2</sup>.<br> Solar energy received on 1 m<sup>2</sup> area in 1 second = 1.4 kJ (Solar Constant)<br> Total energy received in 1 hour = 1.4 kJ x (60 x 60)<br> Because,<br> 1 hour = 3600 seconds.<br> Therefore,<br> Total energy received in 1 hour = 1.4 kJ x (3600) = 5040 kJ<br>

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