Get a sheet of paper and draw a horizontal optical axis. Next,draw a vertical line near the center of the optical axis torepresent your lens, then measure out and draw the focal points.Assume the focal length to be 2cm. Pick an object point 6cm awayfrom the lens on the top left-hand side of the paper. Draw thethree simple case rays – parallel, through the center of the lens,and through the focal point – and locate the image formed on theother side of the lens.
Question 1: Get another sheet of paper and repeat step 1,however instead draw the object point inside the focal length, 1cmaway from the lens. Again draw the three simple case rays
What do you observe? Do the lines converge at a givenpoint???
Question 2: Get a third sheet of paper and repeat the raytracing procedure for a concave lens with focal length -2cm. Placethe object outside of the focal length, 4cm to the left of thelens
Do the rays converge at a given point?
