An optical instrument maker has a convex lens and a concave lens available. A projection unit needs a lens that can form an image on a screen. A viewing unit needs a lens that forms a virtual image at every object distance from the lens.
Which statement about the choice of lenses is correct?
Use the convex lens in the projection unit and the concave lens in the viewing unit.
Use the concave lens in the projection unit and the convex lens in the viewing unit.
Use the concave lens in both the projection unit and the viewing unit.
Use the convex lens in both the projection unit and the viewing unit.
93 exam-style questions on AQA GCSE Physics 6.2 Electromagnetic waves, covering 6.2.1 Types of electromagnetic waves, 6.2.2 Properties of electromagnetic waves 1, 6.2.3 Properties of electromagnetic waves 2, 6.2.4 Uses and applications of electromagnetic waves, 6.2.5 Lenses, and 6.2.6 Visible light. Each one has a worked solution and a mark scheme showing where the marks go.