Mod 3: Lecture 2.1 - Reflection and Refraction Flashcards
1
Q
State the law of reflection.
A
The angle of incidence is equal to the angle of reflection.
The incident ray, reflected ray and the normal, all lie on the same plane.
2
Q
Features of a plane mirror.
A
Always produce virtual image and the image is upside down.
3
Q
What is the function of a focus?
A
It collects weak signals and then concentrates them to potentially be re-transmitted.
4
Q
formula for focus.
A
f=r/2
