Question

Diffused reflection of solar radiation from Earth's surface out of total solar radiation is known as:

• A. Radiance
• B. Irradiance
• C. Albedo
• D. Reflectance

Hint:

Remember: \[ \boxed{ \text{Albedo} = \frac{\text{Reflected Radiation}} {\text{Incident Radiation}} } \] Higher albedo means greater reflectivity (e.g., snow, ice, clouds).

Answer 1

The Correct Option is C

Concept: Albedo is the fraction or percentage of the incoming solar radiation reflected by a surface. It is a measure of the Earth's reflectivity.

Step 1: Understand albedo. It is expressed as \[ \boxed{ \text{Albedo} = \frac{\text{Reflected Solar Radiation}} {\text{Incoming Solar Radiation}} } \] Its value ranges from \(0\) to \(1\) (or \(0\%\) to \(100\%\)).

Step 2: Identify the correct term. Since the question refers to the reflected portion of total incoming solar radiation, \[ \boxed{\text{Albedo}.} \] Therefore, the correct option is \[ \boxed{(C)\;\text{Albedo}.} \]