(Lab Reports must be submitted to the Physics lab at the end of your lab period. The lab report may be submitted on a separate piece of paper or as a page in your notebook. See Lab Point)
In certain situations, the position for the screen which shows a focused image can vary slightly while still showing a sharply focused image. This is based on what is known as the depth of field. In photography this is similar to composing an image with only a focused subject and blurred background or having everything in focus.
1. Provide in a table the data from experiment d (from the converging lens experiment) on the depth of field for the screen positions with and without using the small aperture card.
2. Calculate the average value from the closest and furthest position for the screen when using the small aperture card. How does this value compare to your screen position when the small aperture card is not used?
3. From the furthest and closest positions of the screen while using the small aperture card calculate the half the range. This is the difference between the two values divided by 2. This value can be used as an observational uncertainty on the average value calculated in part 2 of this lab report.