Name ________________________________________________________
Block___________
Light Test Retake Assignment
This is an open book retake test. You can use any source you wish to
help answer the following questions. Research will be required to
answer these questions if you wish to improve your grade. All answers
must be in your own words, using complete sentences with proper
grammar and punctuation. Read carefully. This assignment is to be
returned to Mr. Magnuson by Wednesday March 11 for A day classes
and Thursday March 12 for A day classes. There is a link on Mr.
Magnuson’s school website for an electronic copy of this assignment.
1. Many people require glasses or contacts (types of lenses) to
see properly. Two types of vision problems are called Myopia
(near sighted) and Hyperopia (far sighted). Research both of
these conditions and answer the following questions.
a. What part of the eye is used to focus incoming light and
what type of lens is this?
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b. What is happening to the light entering the eye when you
have Myopia (where does it focus)?
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Name ________________________________________________________
Block___________
c. What type of lens is used to correct Myopia?
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d. What does this corrective lens do to the light passing
through it (what wave behavior: diffraction, refraction,
reflection? Does the light converge or diverge?)?
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e. Draw a diagram of the eye and the lens used to correct
Myopia and show what the light rays do when they pass
through the corrective lens.
Name ________________________________________________________
Block___________
f. What is happening to the light entering the eye when you
have Hyperopia (where does it focus)?
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g. What type of lens is used to correct Hyperopia?
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h. What does this corrective lens do to the light passing
through it (what wave behavior: diffraction, refraction,
reflection? Does the light converge or diverge?)?
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i. Draw a diagram of the eye and the lens used to correct
Hyperopia and show what the light rays do when they pass
through the corrective lens.
Name ________________________________________________________
Block___________
2. Research diffraction and give an example of light or sound or
water waves diffracting. Explain what diffraction is and draw a
diagram to help explain your answer.
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