A thin convex lens of focal length 25 cm is cut into two pieces 0.5 cm above the principal axis . The top part is placed at $(0,0)$ and an object at $(-50 cm, 0)$. Find the coordinate axis ?

Question

$\begin{array}{1 1} 50,-1 \\ 50,1 \\ 0,0 \\ -50,-1 \end{array}$