Introduction:
The purpose of this experiment find the relationship between the object distance and the image distance produced by a projected image of a slit through a lens. First, we looked at the behavior of light through a magnifying glass which is a double convex lens. We used a light box which illuminated a pattern on a piece of paper, and placed the magnifying glass at specific distances away from the light box, and had a blank sheet on which to project the image.
Object distance
as a multiple
of f (cm)
|
Object distance(cm)
|
Image distance(cm)
|
Object height(cm)
|
Image height(cm)
|
M
|
5f
|
77.5 ±0.5
|
28.70 ±0.5
|
8.50 ±0.2
|
3. 0 ±0.5
|
0.35
|
4f
|
62.0.0 ±1.00
|
28.5 ±0.5
|
4.20 ±0.2
|
0.494
| |
3f
|
46.5 ±0. 5
|
34 ±0.5
|
6.40 ±0.5
|
0.75
| |
2f
|
31.0 ±0.20
|
51.70 ±0.2
|
14.50 ±1
|
1.71
| |
1.5f
|
23.0 ±0.5
|
96 ±2
|
38.2 ±2
|
4.49
|
Conclusion:
We observed that the image is always inverted, along both the vertical and horizontal axis, if this was a single convex mirror then the image would not have have been inverted. The slope of the negative inverse d_0 to the negative inverse d_i is about 0.5. This would be the degree M that the image is changing. like we observed if the object was getting further away then the image would become smaller and smaller till it becomes to small to measure.
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