Ch2 Geometric Optics Flashcards
1
Q
DEFINE self-luminous object
A
An object that creates its own light
2
Q
DEFINE light
A
A form of energy that travels away from the source producing it at 3x10^8 m/s
3
Q
DEFINE the reflection of light
A
The bouncing of light off an object
4
Q
STATE the Laws of Reflection of Light
A
- The incident ray, reflected ray and normal at the point of incidence all lie in the same plane.
- The angle of incidence is equal to the angle of reflection
5
Q
Describe an experiment to show light travels in straight lines
A
Carboard sheets with holes. string, light source at one end, observer at the other
6
Q
DEFINE virtual image
A
Image formed by the apparent intersection of rays
7
Q
Give some features of virtual images
A
Formed behind mirror, inverted, formed from apparent intersection of rays, cannot be formed on a screen
8
Q
DEFINE parallax
A
The apparent movement of an object relative to another due to the motion of the observer
9
Q
A
