A converging lens with a focal length of 30 cm is used to create an image of a 2.0 mm long ant. The ant is placed perpendicularly to the optical axis of the lens and the length of the ant is treated as the height in the optical imaging system).Use both ray diagram and the thin lens equation to solve the following problems (2.0 mm long ant is too small compared with a focal length of 30cm for drawing a ray diagram. But you can draw the ant longer and imaging and magnification relationship still holds).

(a) If the lens is placed so that the image of the ant is 8mm long, upright, and vie

Question

A converging lens with a focal length of 30 cm is used to create an image of a 2.0 mm long ant. The ant is placed perpendicularly to the optical axis of the lens and the length of the ant is treated as the height in the optical imaging system).Use both ray diagram and the thin lens equation to solve the following problems (2.0 mm long ant is too small compared with a focal length of 30cm for drawing a ray diagram.  But you can draw the ant longer and imaging and magnification relationship still holds).

(a)    If the lens is placed so that the image of the ant is 8mm long, upright, and vie