An art conservator uses a high-magnification lens to inspect a fine detail in a Renaissance painting. Under a convex lens producing a linear magnification of 6.5, the image of a crack on the paint layer has a width of 14.3 mm.
Calculate the actual width of the crack.
Practise AQA GCSE Physics Electromagnetic waves with exam-style questions for Foundation and Higher tier. 52 questions covering Types of electromagnetic waves, Properties of electromagnetic waves 1, Properties of electromagnetic waves 2, Uses and applications of electromagnetic waves, Lenses (physics only), and Visible light (physics only), matched to the AQA GCSE Physics (8463) specification and written in Paper 1 and Paper 2 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.