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Refraction of Light at spherical surfaces: Lenses — Formula Sheet

ICSE · Class 12 · Physics

8 formulas from Refraction of Light at spherical surfaces: Lenses (ICSE Class 12 Physics) on one page, grouped by topic.

39 questions32 flashcards8 formulas & key relations5 concepts

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8 Entries · 2 Sections

Formulas and Key Relations

2. Refraction at a Spherical Refracting Surface

Refraction at spherical surface (absolute indices): n2/v - n1/u = (n2 - n1)/R

Refraction at spherical surface (relative index): n/v - 1/u = (n - 1)/R

Power of a refracting spherical surface: P = (n2 - n1)/R

Transverse magnification for spherical refracting surface: m = (n1/n2)(v/u)

Longitudinal magnification for spherical refracting surface: mL = (n1/n2)(v/u)^2

4. Lens Maker’s Formula and Gaussian Lens Equation

Lens Maker's Formula: 1/f = (n - 1)(1/R1 - 1/R2)

Gaussian form of lens equation: 1/v - 1/u = 1/f

Lens equation from magnification: m = v/u = (f - v)/f = f/(f + u)

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Frequently Asked Questions

What are the important topics in Refraction of Light at spherical surfaces: Lenses for ICSE Class 12 Physics?
Key topics in Refraction of Light at spherical surfaces: Lenses include Sign Convention and Basic Geometry, Refraction at a Spherical Surface, Foci of a Spherical Refracting Surface, Lenses, Optical Centre, and Types. Study these first, then practise questions on each for the ICSE Class 12 board exam.
How many formulas are in Refraction of Light at spherical surfaces: Lenses?
This sheet lists 8 formulas from Refraction of Light at spherical surfaces: Lenses, grouped by topic. Learn what each symbol stands for so you can apply the formula, not just recall it.
How should I revise Refraction of Light at spherical surfaces: Lenses for the ICSE Class 12 board exam?
Learn the core ideas first, then work through the 39 practice questions on Refraction of Light at spherical surfaces: Lenses. Revise definitions regularly and use flashcards for quick recall before the exam.

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Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.

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