A student is investigating the reflection of light by a plane mirror using a ray-trace sheet.
State the angle between the normal line and the reflecting surface of the plane mirror.
An incident ray of light is directed at the center of the mirror such that it makes an angle of 55∘55^\circ55∘ with the mirror surface. Calculate the angle of incidence.
State the angle of reflection for this ray of light and describe its position relative to the normal.
State two practical precautions that the student should take during this experiment to obtain highly accurate and reliable results.
216 exam-style questions on CIE IGCSE Physics 3.2 Light, covering 3.2.1a Reflection of light, 3.2.1b Images in a plane mirror, 3.2.2 Refraction of light, 3.2.2a Refraction of light, 3.2.2b Total internal reflection, 3.2.2c Refractive index and critical angle, 3.2.2d Optical fibres, 3.2.3a Converging and diverging lenses, 3.2.3b Ray diagrams and the nature of images, 3.2.3c Virtual images and the magnifying glass, 3.2.3d Correcting long-sightedness and short-sightedness, and 3.2.4 Dispersion of light. Each one has a worked solution and a mark scheme showing where the marks go.