practice

1. An image on film is 24 x 36 mm, and so on …
2. Write something else.
3. Write something different.
4. Write something completely different.

conceptual

1. ray-diagrams.pdf
   The diagrams page 3 of on the accompanying pdf show an arrow placed at five different locations in front of a converging lens. Using a ruler (or other straight edge) and the ray tracing methods described in this section, locate and draw the image of the arrow. For each object position, answer the following questions about the image.
   1. Where is the image in relation to the special points on the principal axis? (location)
   2. Is the image magnified or reduced? (size)
   3. Is the image upright or inverted? (orientation)
   4. Is the image real or virtual? (type)
2. ray-diagrams.pdf
   The diagrams on on page 4 of the accompanying pdf show an arrow placed at five different locations in front of a diverging lens. Using a ruler (or other straight edge) and the ray tracing methods described in this section, locate and draw the image of the arrow. For each object position, answer the following questions about the image.
   1. Where is the image in relation to the special points on the principal axis? (location)
   2. Is the image magnified or reduced? (size)
   3. Is the image upright or inverted? (orientation)
   4. Is the image real or virtual? (type)
3. Which graph …

   INSERT GRAPHS

   best represents the relationship between …
   1. image distance and object distance
   2. image distance and object size
   3. image distance and image size
   4. object distance and object size
   5. object distance and image size
   6. object size and image size
4. What kind of eyeglasses can be used to start a fire: those that correct nearsightedness or those that correct farsightedness?

numerical

1. A typical human can focus their eyes on objects that are as close as 25 cm and as far away as the edge of the observable universe. What range of focal lengths can they eye have if it is 24 mm in diameter?

algebraic

1. Prove that image distance equals (M + 1) focal lengths for a converging lens, where M is the magnification.