A student conducts an experiment using an illuminated object, a thin converging lens, and a screen on an optical bench. The student measures the object distance \(s_o\) and the corresponding real image distance \(s_i\) for several trials and plots \(\dfrac{1}{s_i}\) on the vertical axis as a function of \(\dfrac{1}{s_o}\) on the horizontal axis, obtaining the linear best-fit line shown. The line of best fit has a vertical intercept of \(+5.0\text{ m}^{-1}\) and a slope of \(-1.0\). If the object is subsequently placed at a distance of \(s_o = 0.10\text{ m}\) from the lens, which of the following correctly gives the focal length \(f\) of the lens and describes the characteristics of the new image formed?