Practice portal › Dual Nature of Matter and Radiation › Photon Energy, Number of Photons and Intensity
Asked in GSEB Board July 2021 · Photon energy, momentum and mass
Idea: from E = hf, h = E/f, so its unit is J s.
J s = kg m² s⁻²×s = kg m² s⁻¹
Angular momentum L = Iω has unit kg m²×s⁻¹ = kg m² s⁻¹.
So Planck's constant has the same unit as angular momentum.
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