Solved UPSC CDS/OTA Question
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Q · Earth Movement And Impactmedium · 45s
Nutation is:
TopicEarth Movement And Impact
Question Typemultiple choice
Difficultymedium
Marking+1 / −0.33
Test Duration30 min
Step-by-Step Solution
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Nutation refers to small, periodic oscillations superimposed on Earth's precession. These nodding movements slightly change the tilt of Earth's axis over an 18.6-year cycle, affecting precise astronomical observations and long-term Earth orientation.
Final Answer: Option A - Axial wobbling superimposed on precession