### Problem Set #4 Key

Download the key to problem set 4.

Download the key to problem set 4.

Problem set #4 must be turned in by 5 pm either electronically or in my department mailbox (A14).

Problem Set #3 is due either via email or in mailbox A14 by 5 pm on 10/24/2011.

Here is the key for problem set 2.

Download Problem Set 2. Please turn your answers in (showing all work) either electronically or to my department mailbox (A-14) by 5 pm.

**For problem #1, it is fine to assume only two major refraction events (one at the compound lens and one at the second lens) before determining the final image location.

**Please turn your assignment in via email, or to my Chemistry Department mailbox (A14) by 5 pm. **