A student uses a converging lens as a magnifying glass to read small print. The focal length of the lens is 10 cm.
State where the print must be placed.
The image the student sees is a virtual image.
Explain why this image cannot be formed on a screen.
The student replaces the lens with a converging lens of the same diameter and a focal length of 5 cm.
Describe how the shape of this lens is different from the first lens.
Explain why a diverging lens could not be used as a magnifying glass.
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.