Lenses Flashcards
1
Q
What is a lens
A
A piece of transparent material that refracts light
2
Q
What is refraction
A
The bending of light
3
Q
What are two lenses
A
Concave
Convex
4
Q
What is a concave lens
A
A lens thicker at edges and thinner in the middle
5
Q
What lens diverges light
A
Concave
6
Q
Describe a concave lens
A
Virtual
Upright
Smaller
7
Q
What is a convex lens
A
An oval shaped lens
8
Q
What lens converges light
A
Convex lens
9
Q
What are characteristics of a convex inside focal point
A
Virtual
Upright
Larger
10
Q
What are characteristics of a convex outside focal point
A
Real
Vertically inverted
Smaller
11
Q
What is a focal point
A
The point which all rays meet
12
Q
What is short sightedness called
A
Myopia
13
Q
What causes myopia
A
Eyeball is to long
14
Q
How do you fix myopia
A
Concave lens glasses
15
Q
What is long sightedness
A
Hyperopia
