Refraction Lab
Mary Fenning
Lab 12
Reflection, Refraction, & Lenses
Introduction
The purpose of is lab is to observe ray models of light and how light refracts and reflects through a straight line and Snell’s Law.
Procedures
Setup and materials:
Part IV: Procedure:
Using the slit plate observe the rays on the viewing screen set Rotate the slit plate until the slits are horizontal. Record what image looks like at the different angles Trace the rays onto a white piece of paper and extend the lines until an intersection point. Measure the distance between the point of intersection and the common point of intersection. Measure the actual distance between the filament and the center ray table Find percent error based on your calculation In …show more content…
Repeat the on the reverse side of the cylindrical lens and record the data. Part three we place a 3-sided mirror on the ray table with the planar side along the component line. Rotate the ray table and notice the angles of refraction. Use the 50 cm Focal Length Mirror and hold it at about 10 cm in front of the light source, angle the mirror to see the projected image of the light bulb on a piece of paper. Increase the distance to 50 cm and notice the difference in size. In part five, we use thin lenses to create a projector. We use a single lens to magnify the image of an object to project it onto a screen and we will vary the distance to observe how the image changes. Move the target screen around to observe the difference in the image.
Error
In part one, when we had to trace the rays, sometimes the paper would move out of place creating an error in intersection points. This could be a reason why the error percentage is about 48%.
Data and …show more content…
Question 13. Are there practical limits to the degree of magnification of the image? If so, what are they?
Question 14. Is it possible to obtain a non-inverted image with a single lens?
Yes between the focus and the pole of the lens.
Question 15. Can the image formed by a projector be viewed without using a viewing screen? If so, where must the observer be?
No the real image has to be projected
Question 16. What is the relationship between f and d_o when the magnification equals one? Object distance is equal to double the focal length.
Question 17. For a converging lens of focal length f where would you place the object to obtain an image as far away from the lens as possible? Is this also where the image would have its largest magnification? (Hint: again use the thin lens equation to help you – to see what d_i would be, try plugging in different values of d_osuch as d_o=0.1f,0.9f,1.1f,2f,5f,100f, etc.) You would want to put it as close to the lens as possible and you would also obtain its latgest magnification here.
Discussion
Overall this experiment went over well. Although our percent error was a little high, we still were able to understand how light refraction and reflection
Lab 12
Reflection, Refraction, & Lenses
Introduction
The purpose of is lab is to observe ray models of light and how light refracts and reflects through a straight line and Snell’s Law.
Procedures
Setup and materials:
Part IV: Procedure:
Using the slit plate observe the rays on the viewing screen set Rotate the slit plate until the slits are horizontal. Record what image looks like at the different angles Trace the rays onto a white piece of paper and extend the lines until an intersection point. Measure the distance between the point of intersection and the common point of intersection. Measure the actual distance between the filament and the center ray table Find percent error based on your calculation In …show more content…
Repeat the on the reverse side of the cylindrical lens and record the data. Part three we place a 3-sided mirror on the ray table with the planar side along the component line. Rotate the ray table and notice the angles of refraction. Use the 50 cm Focal Length Mirror and hold it at about 10 cm in front of the light source, angle the mirror to see the projected image of the light bulb on a piece of paper. Increase the distance to 50 cm and notice the difference in size. In part five, we use thin lenses to create a projector. We use a single lens to magnify the image of an object to project it onto a screen and we will vary the distance to observe how the image changes. Move the target screen around to observe the difference in the image.
Error
In part one, when we had to trace the rays, sometimes the paper would move out of place creating an error in intersection points. This could be a reason why the error percentage is about 48%.
Data and …show more content…
Question 13. Are there practical limits to the degree of magnification of the image? If so, what are they?
Question 14. Is it possible to obtain a non-inverted image with a single lens?
Yes between the focus and the pole of the lens.
Question 15. Can the image formed by a projector be viewed without using a viewing screen? If so, where must the observer be?
No the real image has to be projected
Question 16. What is the relationship between f and d_o when the magnification equals one? Object distance is equal to double the focal length.
Question 17. For a converging lens of focal length f where would you place the object to obtain an image as far away from the lens as possible? Is this also where the image would have its largest magnification? (Hint: again use the thin lens equation to help you – to see what d_i would be, try plugging in different values of d_osuch as d_o=0.1f,0.9f,1.1f,2f,5f,100f, etc.) You would want to put it as close to the lens as possible and you would also obtain its latgest magnification here.
Discussion
Overall this experiment went over well. Although our percent error was a little high, we still were able to understand how light refraction and reflection