Answer:
Dimensions of Planck's constant, \[h=kg\,{{m}^{2}}\,{{s}^{-1}}\]
Angular momentum\[=m\upsilon
r=kg\,(m\,{{s}^{-1}}\,)m=kg\,{{m}^{2}}\,{{s}^{-1}}\] has the same dimensions
(Remember from Bohr's postulate,\[m\upsilon r=n\,\frac{h}{2\pi }\])
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