Question

A liquid whose coefficient of viscosity is h flows on a horizontal surface. Let dx represent the vertical distance between two layers of liquid and dv represent the difference in the velocities of the two layers. Then the quantity h (dv/dx) has the same dimensions as –

• A. Acceleration
• B. Force
• C. Momentum
• D. Pressure

Answer 1

Answer: (D)

Pressure

Answer 2

F = hA $\frac{dv}{dx}$ Ž $\frac{F}{A}$= h $\frac{dv}{dx}$ = Dimension of pressure