An object 8.0cm high is placed 80.cm in front of a converging lens of focal point 25cm.  Determine the image position and height.

A lamp 10.cm high is placed 60.cm in front of a diverging lens of focal length 20.cm.  Calculate the image position and height.

A typical single lens camera has a converging lens with a focal length of 50.0mm.  What is the position and size of the image of a 25cm candle located 1.0m from the lens?

A converging lens with a focal length of 20.cm is used to create an image of the sun on a paper screen.  How far from the lens must the paper be placed to produce a clear image?

The focal length of a slide projector’s converging lens is 10.0cm.

1. 1. If a slide is positioned 10.2cm from the lens, how far away must the screen be placed to create a clear image?
   2. If the height of a dog on the slide film is 12.5mm, how tall will the dog’s image be on the screen?
   3. If the screen is then removed to a point 15m from the lens, by how much will the separation between the film and the lens have to change from part a?