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 · Circular MotionMedium · 45s
If the angular speed of a particle is doubled and the radius is halved, the centripetal acceleration becomes:
TopicCircular Motion
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.
ac=ω2rac=ω2r. So, (2ω)2×(r/2)=4ω2×r/2=2ω2r×2=4ac(2ω)2×(r/2)=4ω2×r/2=2ω2r×2=4ac.
Final Answer: Option C — Four times