The dimensions of angular momentum/ magnetic moment are

[M A^{- 1} T^{- 1}]

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[M^{- 1} A T^{- 1}]

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[M A T^{- 1}]

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[M A^{- 1} T]

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Solution

The correct option is A $[M A^{- 1} T^{- 1}]$
Angular momentum
$= l ω = [M^{1} L^{2} T^{- 1}]$
Magnetic moment
$= [A L^{2}]$
$∴= \frac{A n g u l a r m o m e n t u m}{M a g n e t i c m o m e n t}$
$= \frac{[M^{1} L^{2} T^{- 1}]}{[A L^{2}]} = [M A^{- 1} T^{- 1}]$ .

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