Converging Lens
15
Name ____________________
Relay Lens
15
(Please Print)
Telescope Rays
20
Ball Lens
15
Weierstrass Lens
20
Brewster Incidence
15
E C E 4500
Second Hour Examination
April 4, 2007
Rules for exam:
1.
The time allowed is 60 minutes.
The test will start at 9:00am.
2.
Answer all questions.
The value of each question is given in parentheses by the
question.
There are a total of 100 points possible.
3.
All work must be shown for full credit.
4.
Put your final answers in the locations specified.
5.
You may use six new singlesided 8 1/2" x 11" information sheets that you have
prepared in your own handwriting.
Your information sheets may not include
photocopied material or typed material. You may also use the six singlesided
information sheets that you prepared for the first examination.
6.
Some physical constants are given below.
7.
You may use one "book of math tables" or calculus textbook.
8.
You may use a "pocket calculator" that can be put in a normalsize pocket and
requires no external electrical power.
Graphing calculators and programmable
calculators are acceptable.
You may not use portable, handheld, laptop, or
notebook computers or wireless or network connections.
9.
You may not use any reference materials other than those listed above.
Therefore,
you may not use the class notes, any textbooks, homework problems, reprints
of papers, journals, prayer books, etc.
10.
There is to be no sharing of anything.
11.
If excess information is given in a question, ignore the unneeded information.
12.
If too little information is given in a question, assume the information needed and
clearly note this with your work.
13.
Any changes to the examination will be written on the board.
Check the board
periodically during the examination.
14.
Any acts of dishonesty will be referred to the Dean of Students without prior
discussion.
The official written Institute procedures on academic honesty (entitled
"Maintaining Academic Honesty" and available from the Dean of Students Office)
will be followed in all cases.
15.
Have a happy exam!
h
=
6.6260755
×
10
34
joulesec
c
=
2.99792458
×
10
8
meter / sec
e
=
1.6021773349
×
10
19
coul
k
=
1.38065812
×
10
23
joule / K
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Imaging By a Converging Lens
A converging lens is also referred to as a positive lens since it has a positive focal
length according to the standard convention. A particular converging lens has a focal
length
f
in air. The principal planes of this lens coincide and so the location of the lens
can be specified by a single principal plane. The lens is depicted in the figure below by
the single vertical line. Distances of one focal length and two focal lengths to the left
and to the right of the lens are shown in the diagram. The space to the left of the lens
is divided into regions A, B, and C as shown in the figure. The space to the right of the
lens is divided into regions D, E, and F. Regions A and F extend to minus infinity and
plus infinity respectively.
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 Spring '08
 Gaylord
 Geometrical optics, solid immersion lens

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