Dimension of Planck's constant h:
AMLT⁻¹
BMLT⁻²
CML
DML²T⁻¹ (from E = hν: [h] = energy × time)
Answer & Solution
Correct answer: D. ML²T⁻¹ (from E = hν: [h] = energy × time)
E = hν. ν has dim T⁻¹. [h] = [E]/[ν] = ML²T⁻²/T⁻¹ = ML²T⁻¹. SI: J s. Also = angular momentum units (kg m²/s).
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