If a picture weighing 10 N is supported by two wires, and the tension forces in the wires are equal (which is typical in this scenario), then the weight of the picture is divided equally between the two wires.
The total weight of the picture is 10 N, so each wire will support half of that weight:
\[ \text{Tension in each wire} = \frac{\text{Total weight}}{2} = \frac{10 , \text{N}}{2} = 5 , \text{N} \]
Therefore, the tension force in each wire is 5 N.