Question

The value of solar constant in SI system is

• A. $1340\frac{watt}{m^2}$
• B. $1340\frac{kilowatt}{m^2}$
• C. $1340\frac{m^2}{watt}$
• D. $1340\frac{watt}{m}$

Answer 1

The correct option is A $1340\frac{watt}{m^2}$

The intensity of solar energy is measured in terms of solar constant. It is the amount of energy received per second per unit area by a perfect black body as placed on the Earth's surface held perpendicular to the direction of the sun's rays.
The value of solar constant in SI system is $1340\frac{watt}{m^2}$.