A liquid flows between two parallel plates along the x-axis. The difference between the velocity of two layers separated by the distance $d y$ is $d v$ . If $A$ is the area of each plate, then Newton's law of viscosity may be written as:

F = - η A \frac{d v}{d x}

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F = + η A \frac{d v}{d x}

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F = - η A \frac{d v}{d y}

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F = + η A \frac{d v}{d y}

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Solution

The correct option is C $F = - η A \frac{d v}{d y}$
The Newton's viscous force acting between two liquid surfaces with relative velocity $d v$ and distance $d y$ between the layers is given as $- η A \frac{d v}{d y}$

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A liquid flows between two parallel plates along the x-axis. The difference between the velocity of two layers separated by the distance dy is dv. If A is the area of each plate, then Newton's law of viscosity may be written as:

The correct option is C F=−ηAdvdyThe Newton's viscous force acting between two liquid surfaces with relative velocity dv and distance dy between the layers is given as −ηAdvdy

A liquid flows between two parallel plates along the x-axis. The difference between the velocity of two layers separated by the distance $d y$ is $d v$ . If $A$ is the area of each plate, then Newton's law of viscosity may be written as:

The correct option is C $F = - η A \frac{d v}{d y}$
The Newton's viscous force acting between two liquid surfaces with relative velocity $d v$ and distance $d y$ between the layers is given as $- η A \frac{d v}{d y}$