Solved UPSC CDS/OTA Question
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Q · Optics-Refraction of LightMedium · 45s
What causes the refraction of light?
TopicOptics-Refraction of Light
Question Typemultiple choice
DifficultyMedium
Marking+1 / −0.33
Test Duration30 min
Step-by-Step Solution
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Refraction occurs because light changes speed when it moves between media of different optical densities.
Final Answer: Option A - Change in the speed of light when it passes from one medium to another