Solved UPSC CDS/OTA Question
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Q · The Universe medium · 45s
The cosmic microwave background radiation was discovered by:
TopicThe Universe
Question Typemultiple choice
Difficultymedium
Marking+1 / −0.33
Test Duration30 min
Step-by-Step Solution
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Penzias and Wilson discovered CMB in 1965, confirming the Big Bang model.
Final Answer: Option B - Arno Penzias and Robert Wilson