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This document describes an experiment using two mirrors taped together at varying angles to observe how the angle affects the reflection of an object placed between the mirrors. Key observations include seeing multiple reflections as the mirror angle increases, with more reflections seen at wider angles. Text placed between mirrors at a 60 degree angle could be read in the second reflection but not others, relating to the angle of reflection. Plotting reflection angles showed a pattern emerging between the object location and reflected images.

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Hillary Jen Labao
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41 views1 page

Activity

This document describes an experiment using two mirrors taped together at varying angles to observe how the angle affects the reflection of an object placed between the mirrors. Key observations include seeing multiple reflections as the mirror angle increases, with more reflections seen at wider angles. Text placed between mirrors at a 60 degree angle could be read in the second reflection but not others, relating to the angle of reflection. Plotting reflection angles showed a pattern emerging between the object location and reflected images.

Uploaded by

Hillary Jen Labao
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as DOCX, PDF, TXT or read online on Scribd
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Lesson 2.

2: Activity
Problem:
How does the angle of two mirrors change the reflection of an object?

Materials
Protractor
Two identical, small plane mirrors
Modeling clay
Small object (coin, small figure, etc.)
Pieces of short bond papers
Pen
tape

Procedure
1. Tape your mirrors together so that they can be opened and closed like a hinge. You want to leave a
slight gap between the two edges (around 1/16th of an inch) to do this.
2. Mark angles of 30, 36, 45, 60, 90, 120 and 180 degrees on a piece of paper using your protractor.
3. Place the hinge of your mirrors at the vertex of your marked angles.
4. The first angle you will test will be 180 degrees.
5. Place your object (you can embed it in modeling clay if it won’t stand up on its own) in the middle of the
mirrors and look at the reflection. How many objects do you see, including both reflected and real?
6. Keeping the object equally between the two mirrors, move the mirrors together into the other angles
you marked out with your protractor. How many objects do you see at each angle? Is there something
about the angle that can help you predict how many objects you will see? Is every reflected image the
same brightness?
7. Write a word on a piece of paper and place it in between the mirrors at 60 degrees. Look closely at the
second reflection (the reflection of the reflection). Can you read the text? Why do you think this is
happening?
8. After doing the procedures, perform another one involving a single mirror. This time, using an object
placed at one side, and the other mirror to plot the exact center of the object in relation to the normal,
draw a line to mark the angles between the object and its reflected image within the angles of 30°, 45°,
and 60°. What can be observed from the angles of reflection and incidence?

Results:
1. How did the image appear in the mirror?
2. What are your significant observations for the images?
3. If you plot all the images that appeared into the mirror and the location of the object in front of the
mirror setup, what pattern emerges?

Conclusion:
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