This task is about how concave and convex lenses work.
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Two types of lenses are concave and convex. |
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| a) |
Predict what you think will happen when each lens is held about 5cm above a pencil as illustrated in the diagram below.
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| Prediction: | ||||||
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| b) |
Now collect the lenses and try this out. Draw your results on the diagrams above.
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| c) |
In terms of light rays, explain what happens for each lens.
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| Convex lens: |
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| Concave lens: |
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| d) |
Name or describe a practical situation where each lens could be used.
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| Convex lens: |
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| Concave lens: |
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