Question

The fraction of sunlight that consists of infrared radiation is?

• A. $\frac{1}{4}$
• B. $\frac{2}{3}$
• C. $\frac{1}{2}$
• D. $\frac{1}{3}$

Answer 1

The correct option is D $\frac{1}{3}$

The energy we receive from the Sun consists of approximately 1/3rd of infrared rays which is the maximum fraction. Infrared rays are responsible for heating up the surface of the earth.