Physics Quiz #2 Flashcards
1
Q
What is refraction?
A
the change in direction of light when it travels from one medium into another. It occurs in transparent and translucent objects.
2
Q
Refraction Rules?
A
Light bends TOWARDS the normal when the 2nd medium is denser
Light bends AWAY from the normal when the 2nd medium is less dense
3
Q
n? c? v?
A
n- index of refraction of a material
c- the speed of light in a vacuum (3.0 x 10^8 m/s)
v- the speed of light in the material
4
Q
Critical angle
A
The angle of incidence for which the angle of refraction is 90 degree
5
Q
Total internal reflection
A
the situation when the <i is greater than the critical angle
