1
Mirror vocabulary
Define pole, principal axis, centre of curvature, radius of curvature, focus and focal length.
Chapter route
Light Reflection and Refraction
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Ordered curriculum items
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2
Concave mirror ray diagrams
Construct image formation diagrams for common object positions.
3
Convex mirror ray diagrams
Construct image formation diagrams and describe image nature.
4
Predict mirror images
Use object position to determine image characteristics.
5
Use mirror formula
Solve problems involving object distance, image distance and focal length.
6
Mirror magnification
Find magnification and infer erect/inverted and enlarged/diminished image.
7
Choose the mirror
Explain use of concave and convex mirrors in torches, vehicles, dentists and security.
8
Laws of refraction
Use incident ray, refracted ray, normal and angle relationships.
9
Find refractive index
Use qualitative and simple numerical relationships for refractive index.
10
Which way does light bend?
Determine bending toward or away from the normal when medium changes.
11
Glass slab path
Trace incident, refracted and emergent rays through a rectangular slab.
12
Lens vocabulary
Define optical centre, principal axis, focus, focal length and centre of curvature.
13
Convex lens ray diagrams
Construct image formation diagrams for common object positions.
14
Concave lens ray diagrams
Construct image formation diagrams and describe image nature.
15
Predict lens images
Use object position to determine image characteristics.
16
Use lens formula
Solve problems involving object distance, image distance and focal length.
17
Lens magnification
Find magnification and infer image orientation and relative size.
18
Find lens power
Use focal length in metres to calculate lens power in dioptres.
19
How the eye focuses
Describe image formation on retina and role of eye lens.
20
Eye accommodation
Describe how ciliary muscles change focal length for near and distant objects.
21
Correct myopia
Explain short-sightedness and correction using concave lenses.
22
Correct hypermetropia
Explain long-sightedness and correction using convex lenses.
23
Correct presbyopia
Describe age-related loss of accommodation and use of suitable lenses.
24
Light through prism
Draw and interpret the path of light through a triangular prism.
25
White light splits
Describe splitting of white light into colours due to different refraction.
26
Recombine colours
Describe how spectral colours can combine to form white light.
27
Scattering in the sky
Apply scattering to blue sky and reddish appearance in some observations.
28
Tyndall effect
Recognise scattering of light by fine particles in a colloid or suspension.
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