Convex & Concave Lenses (AQA GCSE Physics): Flashcards
📚Flashcards
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15 cards from this deck
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Practise the cards
15 cards from this deck
What happens to light passing through the centre of a lens?
What happens to light passing through the centre of a lens?
It does not change direction
How are lenses drawn in diagrams?
How are lenses drawn in diagrams?
As a dashed vertical line
What are focal points?
What are focal points?
Points on either side of lens where light can converge
Types of images produced by convex lenses
Types of images produced by convex lenses
Virtual or real images
Types of images produced by concave lenses
Types of images produced by concave lenses
Virtual images only
Shape description of concave lens
Shape description of concave lens
Caves inward
Concave lens thickness at centre vs edges
Concave lens thickness at centre vs edges
Thinner at centre than at edges
Effect of concave lens on light
Effect of concave lens on light
Spreads light outwards
Which eye condition is corrected by concave lenses?
Which eye condition is corrected by concave lenses?
Short-sightedness
Why do concave lenses correct short-sightedness?
Why do concave lenses correct short-sightedness?
Light focused in front of retina needs spreading out to reach retina
Shape of convex lens
Shape of convex lens
Wider at the centre
Effect of convex lens on light
Effect of convex lens on light
Focuses light inwards
Uses of convex lenses (2 examples)
Uses of convex lenses (2 examples)
Magnifying glasses and binoculars
Eye condition corrected by convex lens
Eye condition corrected by convex lens
Long-sightedness