Split the class into teams. Each team is to have two convex lenses and a ruler. Have one student hold one
convex lens about 30 cm from the textbook. Have another student move the other convex lens up and down.
Other students on the team should observe what is happening to the image on their textbook and
record all observations.
Students should record the distance from where the image gets blurry and where the image is clear (magnified).
Repeat the experiment with the first convex lens held 20cm away from the textbook, then 10 cm from the textbook.
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