Internal Reflection Flashcards
1
Q
Total Internal Reflection
A
- The angle of incidence is greater than the critical angle
- Occurs when light travels from a denser material to rarer material and all light is reflected back into the same material (Hence Internal Reflection of all light, Total)
2
Q
Critical Angle
A
The angle of incidence when the angle of refraction is 90 Degrees, and the ray changes from just refraction to total internal reflection
3
Q
Conditions for Total Internal Reflection
A
- The angle of incidence > The critical angle
- Light passes from a denser medium to a rarer medium
4
Q
Refractive Index Formula for Critical Angle
A
N= (1/Sin C)
C = Critical Angle
5
Q
Refractive Index Formula for Speed of Light
A
N = (C/V)
* C = to Speed of light in a Vaccum
* V = Speed of light in Medium
6
Q
Speed of Light
A
3 x 10 ^ 8 m/s
7
Q
Snell’s Law
A
(Sin i/Sin r) = (N2/N1)
8
Q
Incident Angle < Critical Angle
A
Incident Ray and Refracted Ray
9
Q
Incident ray = Critical Angle
A
Crtical angle is 90 Degrees
10
Q
Incident ray = to Refracted ray
A
Incident ray > Critical Angle
11
Q
Refractive Angle Formula
A
N = (Sin i/Sin r)
R = Inverse Sin (Sin i/N)
