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Question

Which surface would reflect the most solar radiation based on its albedo?

This question was previously asked in
RRB Technician 2026 Grade 3 Question Paper (7-Oct-2026) (Shift 3)
The correct answer is

Snow-covered field

Albedo is the fraction of incoming solar radiation that a surface reflects; it ranges from 0 (absorbs all) to 1 (reflects all).

Fresh snow has a very high albedo, about 0.8–0.9, so a snow-covered field reflects most of the sunlight falling on it.

A sandy beach reflects moderately (about 0.3–0.4), a grassy meadow less (about 0.2–0.25), and dark asphalt very little (about 0.05–0.1).

Hence, the answer is Snow-covered field.

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