Solved UPSC CDS/OTA Question
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Q · Units and DimensionsMedium · 45s
The dimensional formula for Planck’s constant 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.
Planck’s constant relates energy (E = hν). Energy = ML²T⁻²; frequency = T⁻¹. So, h = E/ν ⇒ ML²T⁻² / T⁻¹ = ML²T⁻¹.
Final Answer: Option A - ML²T⁻¹