Let the values of \( \lambda \) for which the shortest distance between the lines \( \dfrac{x-1}{2}=\dfrac{y-2}{3}=\dfrac{z-3}{4} \) and \( \dfrac{x-\lambda}{3}=\dfrac{y-4}{4}=\dfrac{z-5}{5} \) is \( \dfrac{1}{\sqrt{6}} \) be \( \lambda_{1} \) and \( \lambda_{2} \). Then the radius of the circle passing through the points \( (0,0) \), \( (\lambda_{1},\lambda_{2}) \) and \( (\lambda_{2},\lambda_{1}) \) is:
