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Activity 1
Mirror, mirror, on the wall…
Objectives:
• Determine the height, width, and the distance from the mirror of the
image formed by plane mirrors.
• Compare the actual height, width and the distance from the mirror of
the object with that of the image formed by plane mirror.
Materials:
• 1 (10 cm x 15 cm) plane mirror
• 1 graphing paper
• 10 one–peso coins
• modeling clay
• pen
Procedure:
1. Let the mirror stand vertically along a line on a graphing paper as shown in
Figure 1. Use the modeling clay to support the plane mirror.
Figure 1. A Plane Mirror on a Graphing Paper.
2. Using a pen, make three (3) different marks along the intersections on the
graphing paper in front of a mirror.
3. Measure the distance of each mark from the mirror by counting the number
of parallel lines between the mark and the base of the plane mirror. Record
your data in a table similar to Table 1 below.
4. Look at the images of the marks formed by the mirror. Measure the distance
of each image from the mirror by counting the number of parallel
lines between the image and the base of the mirror. Record this also in
Table 1.