Question

The ratio of the dimensions of Planck's constant and that of inertia has the dimension of ?

• A. Frequency
• B. Velocity
• C. Angular momentum
• D. Time

Answer 1

The correct option is A Frequency

The plank's constant has the dimensions of

$h=\left[M^1{L}^2{T}^{-1}\right]$

The dimension of the inertia is

$I=\left[M^1{L}^2\right]$

The ratio of the dimension of the plank's constant and the inertia is

$\frac{h}{I}=T^{-1}$

It is the same as the dimension of frequency.