Optics (OCR GCSE Physics A (Gateway Science Suite)): Flashcards
📚Flashcards
Practise the cards
14 cards from this deck
ShowHide
Practise the cards
14 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?
Does not change direction
How lenses are drawn in diagrams
How lenses are drawn in diagrams
As a dashed vertical line
What are focal points?
What are focal points?
Points either side of lens where light can converge
Types of images from convex lenses
Types of images from convex lenses
Virtual or real images (same or opposite side as object)
Types of images from concave lenses
Types of images from concave lenses
Only virtual images
Shape of a concave lens
Shape of a concave lens
Caves inward
Concave lens: centre vs edges thickness
Concave lens: centre vs edges thickness
Thinner at centre than at edges
Effect of concave lens on light
Effect of concave lens on light
Spreads light outwards
Medical use of concave lenses
Medical use of concave lenses
Correct short-sightedness
Shape of a convex lens
Shape of a convex lens
Wider at centre
Effect of convex lens on light
Effect of convex lens on light
Focus light inwards
Uses of convex lenses (tools)
Uses of convex lenses (tools)
Magnifying glasses and binoculars
Medical use of convex lenses
Medical use of convex lenses
Correct long-sightedness
Magnification formula
Magnification formula
magnification =