Physical World Units And Measurements Ques 32

32. The dimensional formula for angular momentum is

[1988]

(a) $[M^{0} L^{2} T^{-2}]$

(b) $[ML^{2} T^{-1}]$

(c) $[MLT^{-1}]$

(d) $[ML^{2} T^{-2}]$

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Answer:

Correct Answer: 32.(b)

Solution:

  1. (b) Angular momentum

$=$ Momentum of inertia $\times$ Angular velocity

So dimensional formula,

$=[ML^{2}] \times[T^{-1}]$

$=[ML^{2} T^{-1}]$