Which of the following have the same dimensions as Plank's constant? (a) Moment of momentum (b) Moment of fierce (c) Momentum/distance (d) Forceldistance.
class 11th
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2
Answer:
Correct option is
D
angular
Energy of a photon, E=hυ
where h is the Planck's constant and υ is the frequency.
∴[h]=
[v]
[E]
=
[T
−1
]
[ML
2
T
−2
]
=[ML
2
T
−1
]
Angular momentum = Moment of inertia x Angular velocity (Angular momentum)
= [ML
2
][T
−1
]=[ML
2
T
−1
]
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