light Flashcards
1
Q
what type of waves does light travel in?
A
transvers
2
Q
what, unlike sound, can light travel through?
A
a vaccume
3
Q
Why are some things translucent?
A
They let all light pass through them.
4
Q
The angle of incidence always equals what?
A
The angle of exodus
5
Q
Why does light refract?
A
Its shape changes
6
Q
What type of lens focuses light on a point?
A
Converging
7
Q
What are the three primary colours in light?
A
Red, blue and yellow
8
Q
What is the retina?
A
The light-sensitive section at the back of your eye
9
Q
What type of reflection is seen in a mirror?
A
Normal
