Solved UPSC CDS/OTA Question
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Q · The Universe Medium · 45s
Which of the following phenomena is responsible for the redshift of light from distant galaxies?
TopicThe Universe
Question Typemultiple choice
DifficultyMedium
Marking+1 / −0.33
Test Duration30 min
Step-by-Step Solution
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The redshift is due to the Doppler effect—light from objects moving away from us shifts toward the red end of the spectrum.
Final Answer: Option A — Doppler Effect