A camera with a single converging lens is tested using a postage stamp. The lens must form a real, inverted image that is smaller than the stamp. The focal length of the lens is 50 mm.
Which distance between the stamp and the lens produces an image with these properties?
The stamp is 30 mm30\ \mathrm{mm}30 mm from the lens
The stamp is 75 mm75\ \mathrm{mm}75 mm from the lens
The stamp is 50 mm50\ \mathrm{mm}50 mm from the lens
The stamp is 150 mm150\ \mathrm{mm}150 mm from the lens
93 exam-style questions on Edexcel GCSE Physics 5.1 Reflection, refraction and lenses, covering 5.1.1 Reflection, refraction and total internal reflection, 5.1.2 Specular and diffuse reflection, 5.1.3 Colour of light: absorption and filters, 5.1.4 Lenses: power, focal length and shape, 5.1.5 Ray diagrams for converging and diverging lenses, and 5.1.6 Real and virtual images. Each one has a worked solution and a mark scheme showing where the marks go.