# NEET Physics Mechanical Properties of Fluids Questions Solved

A manometer connected to a closed tap reads $4.5×{10}^{5}$ pascal. When the tap is opened the reading of the manometer falls to $4.5×{10}^{5}$ pascal. Then the velocity of flow of water is
(a) 7  ${\mathrm{ms}}^{-1}$                             (b) 8 ${\mathrm{ms}}^{-1}$
(c) 9 ${\mathrm{ms}}^{-1}$                              (d) 10 ${\mathrm{ms}}^{-1}$