Geometric Optics Flashcards
1
Q
Law of reflection
A
Angle of incidence is equal to the angle of reflection and the incidence ray, reflected ray, the normal all lie in the same plane
2
Q
Refraction
A
The change in the direction of the wave passing from one medium to another caused by it change in speed
3
Q
Refractive index
A
The ratio of speed of light in a vacuum to its speed in the material
4
Q
Normal
A
The line which is perpendicular to the plane of the surface
5
Q
Angle of incidence
A
The angle between that normal to a surface and the incoming by Ray
6
Q
Angle of reflection
A
The angle between the normal to a surface and the refracted light ray
7
Q
Critical angle
A
The angle of incidence where the angle of refraction is 90°
