Question

You walk into the classroom and find two converging lenses, one with a focal length of 10 cm, and another with a focal length of 15 cm. You also find a clear light bulb, which has a 2 cm filament. When you turn the light bulb on, the filament gets very bright.

a) Your first task is to set up the light bulb, the one with of the lenses, then a piece of paper, so that you make an image of the light bulb on the piece of paper. Use ray tracing to show how you could do this. Make sure to indicate the distance between the bulb and the lens, and between the lens and the paper. Will the image be right side up, or upside down? Will the image be real or vertical? How big will the image of the filament be?

b) Your next task is to use both lenses to produce an image. Repeat the steps (ray tracing, specifying distances, discussing the image) from the previous problem, but now use both lenses.

Answer 1

answered by: anonymous