Reflection and Refraction in Lenses and Mirrors
Grade 11th Grade · Science · 50 min
What's Included
Learning Objective
I can apply the laws of reflection and refraction to predict the path of light through lenses and mirrors.
Warm-Up Video
CrashCourse · 9:40
Geometric Optics: Crash Course Physics #38
Guided Notes
3 key concepts
- 1
The ray model of light states that light travels in straight-line paths called rays, and the angle of incidence equals the angle of reflection.
- 2
Refraction is the phenomenon of light rays changing direction when passing between media, and the angle of refraction is related to the angle of incidence by Snell's Law; for example, a straw in water appears bent due to refraction.
- 3
Lenses use refraction to form images, where converging lenses form real images when rays converge and diverging lenses form virtual images; the thin lens equation relates object distance, image distance, and focal length.
Practice Questions
10 questions · Multiple choice & Short answer
Exit Ticket
Quick comprehension check
“A flashlight is pointed at a flat mirror at an angle of 60° relative to the normal. At what angle relative to the normal will the light reflect?”
Complete Lesson Package
Get all 3 ready-to-use resources:
