Solved UPSC CDS/OTA Question
A solved UPSC CDS/OTA PYQ — decoded step-by-step.
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Q · EarthquakeMedium · 45s
Which of these seismic waves can pass through the Earth’s core?
TopicEarthquake
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.
Explanation:
P-waves can travel through solids and liquids, so they pass through the liquid outer core.
S-waves cannot travel through liquids, hence they do not pass through the outer core.
Final Answer: Option A — Only P-waves