The purpose of this experiment was to characterize the images formed by convex and concave mirrors.
Experiment
Convex mirror
The image is smaller than the object.
The image is upright.
when you move closer to the mirror, the image is getting bigger.
The image is smaller than the object.
The image is upright.
when you move closer to the mirror, the image is getting bigger.
Concave mirror
when the object is very far from the mirror: the image is smaller than the object; the image is inverted; the object and image are on the same side of the mirror.
when the object is close to the mirror: the image is larger than the object; the image is upright and blurry; the object and images are on the different side of the mirror.
when the object is very far from the mirror: the image is smaller than the object; the image is inverted; the object and image are on the same side of the mirror.
when the object is close to the mirror: the image is larger than the object; the image is upright and blurry; the object and images are on the different side of the mirror.
Diagrams
Image in convex mirror changes depending on the object distance
Image in concave mirror changes depending on the object distance
Compute magnification of the mirrors
Data
|
Magnification ratio
|
Magnification of the mirror
| ||
|
Convex
|
Concave
| ||
|
hi/h0
|
0.318 ±
0.024
|
-0.339 ±
0.009
| |
|
di/d0
|
-0.304 ±
0.023
|
0.297 ±
0.008
| |
Conclusion
The magnifications for the convex mirror were determined to be 0.314 from the ratio of image height and object height and 0.304 from the ration of the image distance and object distance. The maginifications for the concave mirror were determined to be -0.339 from the ratio of image height and object height and -0.297 from the ratio of the image distance and object distance. The uncertainty was 0.029, so all of the magnifications determined lied within this uncertainty range.
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