Solved UPSC CDS/OTA Question
A solved UPSC CDS/OTA PYQ — decoded step-by-step.
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Q · GravitationMedium · 45s
Which of the following is the correct SI unit of Gravitational Constant (G)?
TopicGravitation
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.
By dimensional analysis, from F = G(m₁m₂)/r² ⇒ G = Fr²/(m₁m₂) ⇒ units are Nm²/kg².
Final Answer: Option A — Nm²/kg²