Question

The dimensional formula for areal velocity is

• A. $\left[\right.M^{0}L^{- 2}T\left]\right.$
• B. $\left[\right.M^{0}L^{- 2}T^{- 1}\left]\right.$
• C. $\left[\right.M^{0}L^{2}T^{- 1}\left]\right.$
• D. $\left[\right.M^{0}L^{2}T\left]\right.$

Answer 1

Answer: (C)

Areal velocity is the area covered per unit time.
$\because \left[ \, A r e a \, \right]=\left[\right.L^{2}\left]\right.$
$\therefore \left[A r e a l \, v e l o c i t y\right]=\left[\right.L^{2}T^{- 1}\left]\right.$