I am stuck on this problem because it been like 6 yrs since i took geometry and its due by 9 am. please help!(adsbygoogle = window.adsbygoogle || []).push({});

Derive the thin lens equation:

1/object distance + 1/ image distance = 1/focal length

for a divergent lens, using a diagram of a divergent lens (hint: use similiar triangles)

I have no idea where or how to start. please show me how to do it. I know the focal length for a diverging lens is always negative and always produces a virtual image.

**Physics Forums | Science Articles, Homework Help, Discussion**

Dismiss Notice

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Homework Help: Thin lens equation

**Physics Forums | Science Articles, Homework Help, Discussion**