Dimension of velocity gradient is

Options

A. `[M^(0)L^(0)T^(-1)]`
B. `[ML^(-1)T^(-1)]`
C. `[ML^(3)T^(-2)]`
D. `[M^(2)L^(2)T^(-2)]`

Answer

A

Explanation

Velocity gradient `=(dv)/(dy)`
Where dv is the change in velocities of two layers of liquid separated by depth dy.
so `[(dv)/(dy)]=(LT^(-1))/L=T^(-1)`