This document discusses homework involving lenses and light, including tasks related to air and water as mediums. The homework covers properties of lenses such as magnification and focal length when light passes through different materials. An extension question is also mentioned but no details are provided about the specific questions or tasks.

1. Lens and Light Homework

5. a.
b.
c.
d.

9. Air
Water

10. • because….

13. Extension question!