Warming up on optics, again.

This assignment is due before 9 AM, Monday, December 4th, 2000.

Please type LAST name:

Please type your Student ID Number:

The following three questions refer to the material you were to read in preparation to the lesson. Questions one and two require you to write a three or four sentence response. Number three is a multiple choice question. Click in the appropriate circle.

You may change your mind as often as you wish. When you are satisfied with your responses, click the SUBMIT HOMEWORK button at the bottom of this page.

WarmUp questions are worth 5 points each towards your "Homework and Web Assignments" score (250 points total).




1.


The figure above shows two pictures of a setup including a business card, a converging lens, a mirror, and the camera. The only difference between the two is where the camera was focused. The setup is sketched in the upper right. The two pictures on the left differ only in how the camera lens was focused. All of the objects in the setup remained in place. Please describe the various paths that light took from the business card to the camera. The areas labeled "Part A," etc., each correspond to a different path.



2.

The lens at the front of your eye must produce a sharp image on your retina, at the back of your eyeball. If your vision is good, it can do this whether the object is 1 foot or 100 yards away. Estimate the range of focal lengths that a "good" eye can adopt.





3.

A flat piece of glass has a focal length that is

Undefined

Zero

One

Infinity

None of the above

Below is a space for your thoughts, including general comments about today's assignment. What was hard or confusing (or cool)? What would you like to spend extra time on in class? Do you see how this subject fits in with the others we have discussed?




You may change your mind as often as you wish. When you are satisfied with your responses click the SUBMIT button.

I received no help from anyone on this assignment.



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