Lesson 1079 of 1524
Mirrors and Lenses
The angle of reflection equals the angle of incidence
Practice this chapterThe angle of reflection equals the angle of incidence Plane mirrors and convex mirrors reflect virtual, erect images.
Concave mirrors reflect light to form real, inverted images or virtual, erect images, depending on the location of the object The index of refraction for a material is given by the speed of light in a vacuum divided by the speed of light in that material
convex mirror — a mirror with a reflective side that is curved outward. concave mirror — a mirror with a reflective side that is curved inward. angle of incidence — the angle, with respect to the normal, at which a ray meets a boundary between media or a reflective surface. angle of reflection — the angle, with respect to the normal, at which a ray leaves a reflective surface.
Worked example
What does “convex mirror” mean in Mirrors and Lenses?
- 1Use the wording this chapter gives for convex mirror.
- 2The book says: a mirror with a reflective side that is curved outward.
- 3Do not use the meaning of concave mirror. That term means a mirror with a reflective side that is curved inward.
Result: a mirror with a reflective side that is curved outward
Why. That is the meaning this chapter gives for convex mirror.
Do not swap convex mirror and concave mirror. convex mirror means a mirror with a reflective side that is curved outward. concave mirror means a mirror with a reflective side that is curved inward.
Practice margin
This chapter
A fresh set from this chapter only. Choose 10 or 20. Multiple choice and fill-in, with no repeat inside the set.