The approximate value of solar constant is - Sri Chaitanya Infinity Learn Best Online Courses for NCERT Solutions, CBSE, ICSE, JEE, NEET, Olympiad and Class 6 to 12

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.