# NEET Physics Mechanical Properties of Fluids Questions Solved

Water flows in a streamlined manner through a capillary tube of radius a, the pressure difference being P and the rate of flow Q. If the radius is reduced to a/2 and the pressure increased to 2P, the rate of flow becomes

(a) $4\mathrm{Q}$                          (b) $\mathrm{Q}$

(c) $\frac{\mathrm{Q}}{4}$                          (d) $\frac{\mathrm{Q}}{8}$

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