Lenses Flashcards
1
Q
What are the 2 types of lenses and what do they look like?
A
- Convex lenses (oval like, bulges outwards)
- concave lenses (caves inwards)
2
Q
How do lenses form images
A
By refracting light + changing its direction
3
Q
What effect does convex lenses have on light
A
- causes parallel rays of light to converge to a focal point
4
Q
What effect does concave lenses have on light
A
- causes parallel rays of light to diverge as if they has come from a focal point behind the lense
5
Q
Light Magnification equation
A
Magnification = image height / object height
6
Q
What lenses do magnifying glasses use
A
Convex lenses
