Which expression gives the speed at which water exits a small hole located a vertical…

PHYSICS · Single correct · CBSE · Physics · Mechanical Properties of Fluids · Mechanical Properties of Fluids

Problem

Which expression gives the speed

v

at which water exits a small hole located a vertical distance

h

below the free surface of an open tank containing an ideal, incompressible fluid? (Assume atmospheric pressure at the surface and at the hole.) (a)

v=\sqrt{gh}

(b)

v=\sqrt{2gh}

(c)

v=\sqrt{\dfrac{gh}{2}}

(d)

v=2\sqrt{gh}