Reflexion
What is the "law" of reflection?
The angle of incidence equals the angle of reflection.
What is refraction?
Refraction is the bending of light when it passes from one medium to another.
What is Total Internal Reflection?
It is when light is completely reflected back into a medium instead of refracting out.
What type of lens spreads light rays outwards?
Diverging lens
What type of reflection happens on a rough surface?
Diffuse reflection.
Why does light bend when it enters water from air?
Because its speed changes when it moves into a different medium.
For TIR to happen, must light travel from a more dense or less dense medium?
From a more dense medium to a less dense medium.
What type of image does a convex lens form when the object is placed beyond the focal point?
Real image
In a plane mirror, how does the image compare to the object in size and orientation?
It is the same size, and laterally inverted.
If light travels from air into glass, does it bend toward or away from the normal?
It bends toward the normal.
What two conditions are needed for Total Internal Reflection to occur?
Light must travel from a denser to a less dense medium and the angle of incidence must be greater than the critical angle.
If an object is placed between the focal point and a convex lens, what kind of image is formed?
virtual image