Lenses

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  • Created by: aminasd
  • Created on: 03-02-15 19:00
What is refraction?
The change of direction of light as it passes from one medium to another
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What happens if light enters a medium at an angle?
It gets refracted
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What happens when a light ray goes from a less dense to a more dense medium?
It bends towards the normal
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What is the refractive index?
The amount that a material bends by/how much it slows down light?
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How do you work out the refractive index?
Sin I/sin r
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What is the focal length?
The distance from the lens to the principle focus
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What happens to light rays in a coves or converging lens?
Parallel rays of light are brought to a focus at a principal focus
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How is the magnification produced by a lens calculated?
Image height / object height
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Other cards in this set

Card 2

Front

What happens if light enters a medium at an angle?

Back

It gets refracted

Card 3

Front

What happens when a light ray goes from a less dense to a more dense medium?

Back

Preview of the front of card 3

Card 4

Front

What is the refractive index?

Back

Preview of the front of card 4

Card 5

Front

How do you work out the refractive index?

Back

Preview of the front of card 5
View more cards

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