Planck's constant has the dimension (unit) of

Options

A. Energy
B. Linear momentum
C. Work
D. Angular momentum

Answer

d

Explanation

We define energy of a `E = hf` here h is plank constant and f is the frequency
`h = (E )/(f) rArr [h] = ([E])/([f]) = ([ML^(2)T^(-2)])/([T^(-1)]) = [ML^(2)T^(-1)]`
We define angular momentum as `L = l omega`
`rArr [L] = [I][omega] = [ML^(2)][T^(-1)] = [ML^(2)T^(-1)]`
Hence `[h] = [L] = [ML^(2)T^(-1)]`