Question

The solar radiation received from the sun after its direction has been changed by scattering by the atmosphere is known as 
1. Beam radiation
2. Diffuse radiation
3. Global radiation
4. Effective radiation

Answer 1

Correct Answer - Option 2 : Diffuse radiation

Concept:

Beam Radiation: The solar radiation received from the sun without having been scattered by the atmosphere. Beam radiation is often referred to as direct solar radiation

Diffuse Radiation: The solar radiation received from the sun after its direction has been changed by scattering by the atmosphere. Diffuse radiation is referred to in some meteorological literature as sky radiation or solar sky radiation.

Global Radiation: The total solar radiation (sum of the beam and diffuse radiation) on horizontal the surface is often referred to as global radiation.

Irradiance (W/m²): The rate at which radiant energy is incident on per unit area of a surface.