1.

The sun delivers 10^(3) W // m^(2) of electromagnetic flux to the earth's surface. The total power that is incident on a roof of dimensions 8 m xx 20 m, will be:

Answer»

`2.56 xx 10^(4) W`
`6.4 xx 10^(5) W`
`4.0 xx 10^(5) W`
`1.6 xx 10^(5) W`

SOLUTION :`"Power"="AREA" xx "solar CONSTANT"`
`=1.62 xx 10^(5) W`.


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