Lab notes

How does the object location affect the formation of images, in terms of:

-          Whether or not an image forms

-          Whether the image is “real” or “virtual”

-          Whether the image is larger, smaller, or the same size as the object

-          Whether the image is upside-down or right-side up

-          Where the image is located

First, find an approximate “focal length” (f), using the technique described in class – focusing on a bright object outside, bringing an image onto a screen.

Then, data collection begins.  Do the convex lens first.

In this lab, move the object (candle) around methodically.  Note the following in a table:

do           object distance from lens

di            image distance from lens

U/D        up or down

R/V        real or virtual

Size        size change

Repeat for a concave lens.