Light from a ceiling lamp is reflected by a polished stone floor. The reflected ray makes an angle of 27∘ 27^\circ\,27∘ with the normal.
What is the angle of incidence?
27∘27^\circ27∘
153∘153^\circ153∘
63∘63^\circ63∘
54∘54^\circ54∘
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.