Phys 1.5 - Lenses

HideShow resource information
  • Created by: Dan
  • Created on: 02-05-13 20:46
How do lenses work?
Parallel rays of light pass through a lense and meet at a single point
1 of 14
What is the name of this point where light meets?
Principle focus or focal point
2 of 14
How is the focal length determined?
The distance of the focal point to the centre of the lense
3 of 14
There are 2 focal points, why?
Light can pass through a lense on both sides, there's one focal point each side of the lense
4 of 14
If an object is further away from the lense than the focal point, what sort of image is formed?
An inverted, real, magnified image is formed
5 of 14
How is magnification calculated?
magnification = Image height / Object height
6 of 14
What does the size of the image depend on?
How close the object is to the lense
7 of 14
if the image is nearer to the lense than the focal point, what sort of image is formed?
An upright, virtual, magnefied image is formed
8 of 14
What does diverge mean?
The rays of light seperate
9 of 14
What does converge mean?
The rays of light meet at a single point
10 of 14
How does a diverging lense have a focal point if the light seperates?
The direction the light diverges can be used to find a focal point the other side of the lense
11 of 14
Images produced by diverging lenses are always?
Virtual
12 of 14
Axis arrows on a graph of a diverging lense point what way? Inward or outward?
Arrows point inwards
13 of 14
Axis arrows on a graph of converging lense point what way? inward or outward?
Arrows point outward
14 of 14

Other cards in this set

Card 2

Front

What is the name of this point where light meets?

Back

Principle focus or focal point

Card 3

Front

How is the focal length determined?

Back

Preview of the front of card 3

Card 4

Front

There are 2 focal points, why?

Back

Preview of the front of card 4

Card 5

Front

If an object is further away from the lense than the focal point, what sort of image is formed?

Back

Preview of the front of card 5
View more cards

Comments

No comments have yet been made

Similar Physics resources:

See all Physics resources »See all Light and Optics resources »