Two Mirrors
Part of the Optics, Waves and Modern Physics section of Coddy's Physics journey. Lesson 10 of 53.
Each mirror reflects the images in the other one.
For mirrors at an angle θ (360° / θ a whole number):
N = 360° / θ − 1
90° gives 3 images, 60° gives 5; parallel mirrors give images without end.
Challenge
Two mirrors meet at θ = 72°. How many images N of a candle between them do you see?
Try it yourself
Test yourselfThis lesson includes a short quiz. Start the lesson to answer it and track your progress.
All lessons in Optics, Waves and Modern Physics
1Reflection and Refraction
Reflection of LightThe Refractive IndexSnell's LawTotal Internal ReflectionDispersionApparent DepthRecap - Optical Fiber4Mechanical Waves
What a Wave IsTwo Graphs of a WaveWhen Pulses MeetInterferenceStanding WavesHarmonicsRecap - Guitar String