A Lens and a Mirror
Part of the Optics, Waves and Modern Physics section of Coddy's Physics journey. Lesson 16 of 53.
A mirror behind a lens: three steps. Lens, then mirror, then the lens again the other way.
The mirror's image is u₂ = 2d − v₁ from the lens.
f = 10, object 30, mirror 25: v₁ = 15, u₂ = 35, final image 14 cm in front of the lens.
Challenge
A converging lens has f = 10 cm, and an object is 30 cm in front of it. A flat mirror is 25 cm behind the lens. Where does the light form its final image: how far v_2 in front of the lens?
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