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(C) According to Newton's law of viscosity,the viscous force $F$ acting on a plate of area $A$ moving with velocity $u_0$ over a liquid layer of thick

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$A, C, D$

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(C) According to Newton's law of viscosity,the viscous force $F$ acting on a plate of area $A$ moving with velocity $u_0$ over a liquid layer of thickness $h$ is given by:$F = \eta A \frac{dv}{dx} = \eta A \frac{u_0}{h}$From this expression:$1$. The resistive force $F$ is inversely proportional to $h$ $(F \propto 1/h)$. Thus,statement $(A)$ is true.$2$. The resistive force $F$ is directly proportional to the area $A$ $(F \propto A)$. Thus,statement $(B)$ is false.$3$. The tangential (shear) stress $	au$ is defined as $	au = F/A = \eta \frac{u_0}{h}$.$4$. Since $	au = \eta \frac{u_0}{h}$,the shear stress on the floor (or plate) is directly proportional to $u_0$. Thus,statement $(C)$ is true.$5$. Since $	au = \eta \frac{u_0}{h}$,the shear stress is directly proportional to the viscosity $\eta$. Thus,statement $(D)$ is true.Therefore,statements $(A), (C),$ and $(D)$ are true.

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