Lenses Flashcards
1
Q
What is refraction
A
Change of direction of light as it passes from two different mediums
2
Q
How does a lens form an image
A
Refracting light
3
Q
What happens to the rays of light in a convex of converging lens
A
Parallel rags of light are brought to a focus at the principal focus
4
Q
What is the focal length
A
The distance from the lens to the principle focus
5
Q
How is the nature of an image defined
A
By it’s size relative to the object
6
Q
How is the nature of an image produced by a converging lens
A
The distance at which the object is placed from the lens
