Solved UPSC CDS/OTA Question
A solved UPSC CDS/OTA PYQ - decoded step-by-step.
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Q · Units and DimensionsMedium · 45s
The dimensional formula of gravitational constant G is:
TopicUnits and Dimensions
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.
F = Gm₁m₂/r² ⇒ G = Fr²/m² ⇒ (MLT⁻²)L²/M² = M⁻¹L³T⁻².
Final Answer: Option A - M⁻¹L³T⁻²