Solved UPSC CDS/OTA Question
A solved UPSC CDS/OTA PYQ — decoded step-by-step.
Solve it the standard way once — then learn the shortcut.
Q · Work, Energy and PowerMedium · 45s
A body of mass m moving with speed v has kinetic energy E. If its speed becomes 3v, its kinetic energy will be:
TopicWork, Energy and Power
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.
Kinetic energy ∝ v², so (3v)² = 9v² ⟹ KE = 9E.
Final Answer: Option C — 9E