Lenses

This lab explores the effects of placing a converging lense before a real image projected by a filament.  Our goal is to observe the changes in the image produced by the lense as it is moved along the axis between the real image and the projection.

It is necessary to determine the focal length of the lense to be used in the experiment.  In order to do so, we place the lense along a meter stick and focus the sunlight and then note the distance from the lense to the floor (see below).

The focal point of the lense is determined

The lense will now be moved along a meter stick in factors based on the lense's focal lenght.  We will be noting the distance from the object, the image distance, the object height and the image height.  Using the Image height and Object height, we can determine the magnification, M.

A real image is projected through the lense and onto a whiteboard

The results: