Solved UPSC CDS/OTA Question
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Q · Optics-Refraction of LightMedium · 45s
Which factor does NOT affect the refractive index?
TopicOptics-Refraction of Light
Question Typemultiple choice
DifficultyMedium
Marking+1 / −0.33
Test Duration30 min
Step-by-Step Solution
The complete worked solution.
Every step explained - no skipped algebra.
Frequency stays constant during refraction.
Final Answer: Option D - Frequency of source