Lenses

 

Objective:

 The purpose of this lab is to analyze the characteristic of a biconvex lens and verify the relationship between the image distance, object distance, and focal length.

First find the force, by using the sun.



 

 

 

 Data：

 Graph:

 

One note not present in the data is that upon the reversal of our lens in the lens holder, the image underwent no change in height or orientation. As we extended the distance from the focal point, our  magnification grew less and less. We also were able to see that as we made the object distance within the focal length, the image was flipped. Using excel, I found, experimentally, that:

 

 

 

Error:

The error on this experiment can be mostly contributed to measurement error. We can contribute an error of about ±3cm on all measurement due to the increments of the ruler used, ruler that is not perfectly perpendicular with the paper and the light source, and the image that may not be completely focused on the screen.