The physical quantity having the same dimensions as Planck's constant h is

We know that E, =h v, where h is Planck's constant.∴ h=Ev    or [h]=ML2T−2T−1=ML2T−1Similar, L=Iωor [L]=ML2×T−1or [L]=ML2T−1Therefore, Planck's constant h has the same dimensions as that of angular momentum.