question_answer 59)

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

Answer:

                  In Fig. 6(EP). 10, AB is the principal axis of original thin convex lens of = 25 cm. It has been cut into pieces 0-5 cm above the principal axis. The top part is placed at (0, 0) and object O is at (- 50 cm, 0). If there were no cut, the object would have been at a height 0-5 cm from principal axis AB.                  As                                                                                      Magnification, Thus, the image would have been formed at 50 cm from the pole on right side of lens and 05 cm below the principal axis. Hence, w.r.t. the X-axis passing through the edge of the cut lens, the co-ordinates of the image are (50 cm, - 1 cm).