Two objects are placed on the principal axis of a thin converging lens. One is 10 cm from the lens and the other is on the other side of the lens at a distance of 40 cm from the lens. The images of both objects are in the same plane. Which of following is true?
(a) Focal length of lens is 16 cm
(b) Focal length of lens is 4 cm
(c) Image will form at 80/3 cm from lens
(d) Data insufficient
