Ques. 1AIPMT 2001
The dimensions of Planck's constant are equal to those of
- energy
- momentum
- angular momentum
- power
Answer
(3) angular momentum
Solution
E = h h = E
[h] = [ ML2T-2][ T-1] = [ ML2T-1]
Angular momentum L = mvr [L] = [M][ LT-1][L] = [ ML2T-1]
Planck's constant has the dimensions of angular momentum.
Answer: (3)