A thin convex lens of focal length 50 cm is cut into two pieces 0.5 cm above the principal axis as shown. The parts are now placed on the x-axis. The x co-ordinate of the image of an object placed at (–100, 0) after refraction at both the parts is
An object is placed perpendicular to principal axis of a convex lens of focal length 20cm.the distance of object from lens is 30cm
Find the position,magn magnifica and Nature of image