Physical World Units And Measurements Ques 15
15. The dimensions of Planck’s constant are same as
[2001]
(a) energy
(b) power
(c) momentum
(d) angular momentum
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Answer:
Correct Answer: 15.(d)
Solution:
- (d) We know that $E=h v$
$h=\frac{E}{v}=\frac{[ML^{2} T^{-2}]}{[T^{-1}]}=[ML^{2} T^{-1}]$
Angular momentum $=I \omega$
$=[ML^{2}][T^{-1}]=[ML^{2} T^{-1}]$
BETA
