Solved UPSC CDS/OTA Question
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Q · Optics-Refraction of LightMedium · 45s
In a rainbow formation, what is the order of processes?
TopicOptics-Refraction of Light
Question Typemultiple choice
DifficultyMedium
Marking+1 / −0.33
Test Duration30 min
Step-by-Step Solution
The complete worked solution.
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Sunlight enters a raindrop (refraction + dispersion), then undergoes internal reflection, then refracts out.
Final Answer: Option A - Refraction → Dispersion → Reflection → Refraction