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The approximate value of solar constant is

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1.4

\frac{kW}{m^{2}}

1.56

\frac{kW}{m^{2}}

3.4

\frac{kW}{m^{2}}

None of the above

answer is A.

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Detailed Solution

The approximate value of solar constant is 1.4

\frac{kW}{m^{2}}

Each square meter of earth’s upper atmosphere receives about

1.4 kJ

of solar energy second or 1.4

\frac{kW}{m^{2}}

of power. This power received by the unit area of the earth’s atmosphere is called as solar constant. About

47 %

of the solar energy received by the earth reaches its surface. Remaining part of the solar radiation gets reflected back to space.

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