Additional questions and calculations
We will use the technique of ray tracing along with the equations of geometrical optics to investigate aspects of a single lens with a single object. The lens we will use in this simulation is a thin double-convex lens.
1. Move the object towards the lens.
a)What happens to the image formed on the other side of the lens?
a)Use the appropriate equation above to solve for the focal distance (f). Describe the equation you used and give your result.
| distance object (do) | distance image (di) | magnification (m) |
|---|
a) For real images, what should the sign of di be?
| distance image (di) | magnification (m) |
|---|
c)Make sure you fill in the table above.
4. Additional questions and calculations. Select the correct answer, or perform the requested calculation.
e)What was the focal distance (f) when the radius of curvature was .70 and index of refraction was 1.8?
f)Calculate the radius of curvature of a lens with a focal distance of 40. cm and an index of 1.2.