A dam has an orifice near the bottom that is 5m above the ri

A dam has an orifice near the bottom that is 5m above the river surface. The orifice delivers water horizontally and the resulting jet of water enters the stream 20m from the face of the dam. What is the water level behind the dam?

Solution

Since dimension or any other information about dam is not given so I don\'t think that there is any way to relate water level behind the dam with given information.

If I assume this question is complete then water level behind must be more than 5 m.

Because orifice is at 5 m hight so water can flow only when water level is more than 5m