Lens Worksheet 2

Hold a converging lens in front of a sheet of card or paper. Move it closer or further away from the paper until a sharp focused image of the windows is produced.

The focal length is the distance between the lens and the screen (when a focused image of a distant object is produced).

1. The image is:

a) real virtual

b) magnified reduced

c) the right way up inverted

(Note: a real image can be projected on to a screen, a virtual image cannot.)

2. Complete the table for at least two different lenses.

Sketch of lens Focal length / m