Lab 9: Lenses (10-04/03/2012) x

Purpose:

In this lab we will examine the physical property of thin lens to determine the characteristic and behavior of lens.


Method:

We will find the relationship between the image distance and object distance by measuring the magnification of the lens on several points. The set will be graph to analyze and deduce the general behavior of the lens.

di (cm)	1/di	do (cm)	negative 1/do
7.1	0.140845	25	-0.04
7.3	0.136986	20	-0.05
8.4	0.119048	15	-0.066666667
10.7	0.093458	10	-0.1
15.7	0.063694	5	-0.2

di (cm)	do (cm)
7.1	25
7.3	20
8.4	15
10.7	10
15.7	5

Figure : Inverse Image Distance vs Negative Inverse Object Distance

y = 0.481x + 0.1547

Conclusion:

We find that the relationship of inverse image distance relative to negative inverse object distance is directly proportional to each other. The linear line of both grapg evidences this general relationship. Thus the lens equation 1/p +1/q = 1/f holds true.