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Which among the following has the maximum albedo?

June 1, 2025 by rawan239

Which among the following has the maximum albedo?

Vegetation

Concrete

Desert

Clouds

This question was previously asked in

UPSC Geoscientist – 2021

Download PDF Attempt Online

The correct answer is Clouds.

Albedo is the measure of the reflectivity of a surface. Clouds, especially fresh, thick clouds, are very effective at reflecting solar radiation back into space and typically have a high albedo (ranging from 0.2 to 0.7 or even higher).

Other surfaces listed have generally lower albedos: Vegetation (like forests) typically has a low albedo (around 0.1-0.2) as it absorbs sunlight for photosynthesis. Concrete surfaces have moderate albedo (around 0.1-0.3). Desert surfaces (sand) can have moderate to high albedo (around 0.2-0.4) depending on the color and composition of the sand, but generally lower than bright clouds. Fresh snow has the highest albedo among natural surfaces, but it was not an option.

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