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Chapter overview
Reflection, refraction, prism effects, lenses, spectrum, and image formation.
Practice ready
10963 MCQs and 7759 written prompts are ready for focused chapter work.
Topics
8
Recall
24
Cards
46
Topic 1
Concave mirrors can form real or virtual images depending on object position; convex mirrors always form virtual, e...
Topic 2
Refraction at the two parallel faces of a glass slab bends the ray and then makes it emerge parallel to its origina...
Topic 3
A prism deviates light because the ray refracts at two non-parallel faces.
Topic 4
Objects under water appear raised because light bends as it passes from water to air.
Topic 5
Total internal reflection happens when light travels from a denser medium to a rarer medium and the angle of incide...
Topic 6
Lenses form images by refracting rays so that they converge or diverge in a predictable way.
Topic 7
Lens power measures how strongly a lens converges or diverges light and is linked to focal length.
Topic 8
White light splits into colours because different wavelengths refract by different amounts.
Chapter pack
Topic list
Topic 1
Study concave and convex mirrors, focal length, ray diagrams, and mirror formula.
Topic 2
Trace refraction through a rectangular glass slab and explain lateral displacement.
Topic 3
Trace refraction through a prism and understand deviation and prism ray diagrams.
Topic 4
Use apparent depth and real depth to explain refraction observations in water and glass.
Topic 5
Study critical angle, total internal reflection, optical fibres, mirages, and prism applications.
Topic 6
Understand convex and concave lenses, ray diagrams, and lens formula.
Topic 7
Connect focal length with lens power and solve simple numerical problems.
Topic 8
Connect deviation, dispersion, visible spectrum, electromagnetic spectrum, and practical uses.
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