Question

The ratio of the dimensions of planck's constant and that of the moment of inertia has the dimensions of

• A. frequency
• B. velocity
• C. angular momentum
• D. time

Answer 1

The correct option is A

frequency

$E=hv$

$\therefore h=\frac{E}{v}=E.T=M^1{L}^2{T}^{-2}{T}^1$

$\therefore \frac{h}{I}=\frac{M^1{L}^2{T}^{-1}}{M^1{L}^2}=T^{-1}=\frac{1}{T}\to \text{Frequency}$