practice problem

This is due on Friday for C block, and next Monday for E block.

Also, the formal lab is due NEXT Thursday for C block and NEXT Friday for E block. Drafts (for those who wish to submit them) should be turned in by no later than one class earlier.

In addition to finishing the lab questions, try this problem:

A convex lens has a focal length of 20 cm. Calculate di under these circumstances:

do = 60 cm

do = 40 cm

do = 30 cm

do = 20 cm

do = 10 cm

This may seem tedious, but the idea is to help you see what happens to di as the object approaches the focal length.