Give the meaning of efflux.

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(N/A) Efflux refers to the process of a fluid flowing out of a container or vessel through an opening,such as a hole or a nozzle.
In the context of fluid mechanics,the velocity of efflux is the speed at which the fluid emerges from the opening.
According to Torricelli's law,for an ideal fluid,the velocity of efflux $v$ is given by the formula $v = \sqrt{2gh}$,where $g$ is the acceleration due to gravity and $h$ is the height of the fluid column above the opening.

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