Previous year MCQs

General science UPPSC 1993 GS-I
Question

Which color combination is best suited for umbrella to protect from sunlight (stinter)?

Answer & Solution

Answer: (Detailed Solution Below)

Option A: White on the upper and black in the inner side

Detailed Solution:

The correct answer is “White on the upper and black in the inner side ”.
The best color combination for an umbrella to protect from sunlight is white on the upper and black on the inner side.

White reflects most sunlight, while black absorbs the most, so having white on the outside will reflect away the sun's rays, and the black inner layer will trap any remaining light that might penetrate.

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