Convex & Concave Ray Diagrams (AQA GCSE Physics): Flashcards
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Practise the cards
15 cards from this deck
What changes images in lenses?
What changes images in lenses?
Refraction of light
Shape of convex lens
Shape of convex lens
Thicker in middle than at edges
Shape of concave lens
Shape of concave lens
Thicker at edges, thinner in centre
Effect of convex lens on light
Effect of convex lens on light
Refracts inwards toward principal focus
Effect of concave lens on light
Effect of concave lens on light
Causes light to diverge (spread out)
What is focal length?
What is focal length?
Distance from lens centre to principal focus
Where are principal foci located on a lens?
Where are principal foci located on a lens?
On both sides of the lens
Convex lens: path of parallel ray
Convex lens: path of parallel ray
Refracts through principal focus
Convex lens: ray from principal focus
Convex lens: ray from principal focus
Leaves lens parallel to axis
Convex lens: ray along axis
Convex lens: ray along axis
Continues in same direction
Concave lens: path of parallel ray
Concave lens: path of parallel ray
Appears to come from principal focus
Concave lens: ray toward principal focus
Concave lens: ray toward principal focus
Leaves parallel to axis
What is a real image?
What is a real image?
Light comes together (e.g., on screen or retina)
Which lens type produces real images?
Which lens type produces real images?
Only convex lenses
Which lens always produces virtual images?
Which lens always produces virtual images?
Concave lenses