Question

The approximate value of the solar constant is?

• A. $1.4kW/m^2$
• B. $1.4kW/min$
• C. $1.4kJ/m^2$
• D. $1.4kW/mi{n}^2$

Answer 1

The correct option is A $1.4kW/m^2$

Solar energy reaching per unit area per unit time at the outer edge of the earth’s atmosphere exposed perpendicularly to the rays of the sun at an average distance between the sun and the earth is called solar constant. Its approximate value is $1400W/m^2$ or $1.4kW/m^2.$