3.2 - Refraction Of Light Flashcards
0
Q
What is meant by the ‘critical angle’?
A
The angle at which when the angle of incidence is greater than, total internal reflection occurs
1
Q
What is Snell’s law?
A
The ratio sin@1 /sin@2 is a constant when light passes obliquely from medium 1 to medium 2.
2
Q
What is meant by ‘total internal reflection’
A
This is when all the light energy is reflected and none is refracted
3
Q
What happens to a waves frequency when it changes medium?
A
The frequency is unaltered
