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Experiment
C09 The Focal Length of a Convex Mirror
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| Objectives |
- Study the virtual image formed by a convex mirror
- Determine the focal length of a convex mirror using a convex lens
- Determine the focal length of a convex mirror by graphical method
- Learn the technique of locating virtual image by no-parallax method
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| Description |
| In this activity, you will measure the focal length of a convex mirror using several methods.
In Experiment 1, you will locate the center of curvature of the convex mirror with the help of a convex lens.
In Experiment 2, you will locate the virtual image formed by the convex mirror using no-parallax method. |
| Apparatus |
| convex mirror on a holder (focal length not greater than 15 cm) |
[1] |
| convex lens on a holder (focal length about 15 cm) |
[1] |
| metre rule / optical bench |
[1] |
| illuminated object |
[1] |
| translucent screen |
[1] |
| optical pin on a cork |
[2] |
| plane mirror on a holder |
[1] |
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