A lens is placed in the XYZ coordinate system such that its optical center is at the origin and principal axis is along the X axis. The focal length of the lens is 20 cm. A point object has been placed at the point (– 40 cm, + 1 cm, –1 cm). Which of the following are correct about coordinates of the image?
(a) x = 40 cm
(b) y = + 1 cm
(c) z = + 1 cm
(d) z = – 1 cm
