light reflection Flashcards
1
Q
speed of light travelling through vacuum?
A
3x10^8
2
Q
Luminous objects…
A
give off light
3
Q
Non-luminous objects…
A
do not give off light
4
Q
what is reflection?
A
The bending off light through the same medium
5
Q
when light is reflected…
A
The direction changes but the speed remains the same
6
Q
what is a normal
A
an imaginary line perpendicular to the reflecting surface
7
Q
laws of reflection
A
angle of incident=angle of reflection
the incident ray, the reflected ray, point of incident and the normal lies on the same plane.
8
Q
properties/characteristics of a mirror image
A
- upright
- virtual
- same size
- laterally inverted
- image is at equal distance from the mirror as the object to mirror
9
Q
smooth surface…
A
regular reflection
10
Q
rough surface…
A
diffuse reflection
