Refraction at Spherical Surfaces and Thin Lenses

Physics · Chapter 15 · Unit 6: Optics

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Your path through this chapter

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Visual lesson Beta
1. Part 1: Refraction at a spherical surface and the lens maker’s formula17 slides
2. Part 2: Magnification, power and combinations19 slides
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Notes Beta
5 sections with key terms, formulas and exam tips.
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Flashcards Beta
30 cards for quick recall of key terms and facts.
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Practice
70 board-style questions with instant checks: Numerical 17, Short answer 17, Multiple choice 16, Assertion and reason 5.
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Chapter test Free
Short and long chapter tests in board pattern, with results and analysis.
- Chapter test (long) — Refraction at Spherical Surfaces and Thin Lenses · 40 marks · 100 min
- Chapter test (short) — Refraction at Spherical Surfaces and Thin Lenses · 20 marks · 50 min
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Refraction at a single spherical surface (convex towards rarer medium, real image): relation between n1, n2, u, v and R
Lens maker's formula and thin lens formula (derived for a biconvex lens; extended to biconcave, plano-convex and a lens in a liquid)
Magnification by a lens; power of a lens in dioptre
Thin lenses in contact: 1/F = 1/f1 + 1/f2 and P = P1 + P2
Image formation by combinations of thin lenses and of lenses with mirrors