On a number line, two convex lenses are placed. At origin is the lens 1 with focal length
of 30 cm and on 100 cm on number line is the lens 2 with focal length of 40 cm. An object is placed at
the point of 40 cm. Find the positions of any three images.
of 30 cm and on 100 cm on number line is the lens 2 with focal length of 40 cm. An object is placed at
the point of 40 cm. Find the positions of any three images.