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Refraction through lenses — converging lenses and ray diagrams
Practice Questions

20 CIE IGCSE Physics questions on Refraction through lenses — converging lenses and ray diagrams, each with instant feedback and a full examiner-style mark scheme.

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Try 2 sample questions on Refraction through lenses — converging lenses and ray diagrams

Question 1 · 1 mark · Difficulty 1/3

A ray of light travelling parallel to the principal axis of a converging lens passes through the lens. Which statement correctly describes the path of the ray after refraction?

  1. It continues parallel to the principal axis
  2. It passes through the optical centre of the lens
  3. It passes through the principal focus on the opposite side of the lens
  4. It is reflected back along its original path
Show answer & explanation
✓ Answer: C — It passes through the principal focus on the opposite side of the lens
Award 1 mark for identifying that a ray parallel to the principal axis refracts through the principal focus. A is incorrect because converging lenses cause parallel rays to converge. B describes rays passing through the optical centre, which is a different ray construction rule. D is incorrect because refraction, not reflection, occurs at a lens.
Question 2 · 1 mark · Difficulty 1/3

What is the correct definition of the principal focus of a converging lens?

  1. The point where all rays of light meet after passing through the lens
  2. The point on the principal axis where rays parallel to the axis converge after refraction
  3. The centre of the lens where all rays pass through undeviated
  4. The point where the object must be placed to form a real image
Show answer & explanation
✓ Answer: B — The point on the principal axis where rays parallel to the axis converge after refraction
Award 1 mark for identifying that the principal focus is specifically where rays parallel to the principal axis converge after refraction. A is incorrect because only parallel rays converge at the principal focus, not all rays. C describes the optical centre, not the principal focus. D is incorrect because objects can be placed at various positions to form real images.
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CIE IGCSE Physics: Refraction through lenses — converging lenses and ray diagrams FAQ

How many CIE IGCSE Physics questions on Refraction through lenses — converging lenses and ray diagrams are there on Kramizo?
Kramizo currently has 20 exam-board-aligned practice questions on Refraction through lenses — converging lenses and ray diagrams for CIE IGCSE Physics, with new questions added every week. Each question gives you instant feedback and a full examiner-style mark scheme that tells you exactly what would earn marks on a real CIE paper. The questions span the full difficulty range — from straightforward recall (level 1) right up to multi-step reasoning and evaluation (level 3) — so the bank works for first-pass revision and final exam-week stress testing alike.
Is Kramizo free for CIE IGCSE students preparing for Physics?
Yes — completely free. Every student gets 45 questions a day on the free plan, with no card required and no trial countdown. That free quota works across every subject and every topic in our bank, so you can mix Refraction through lenses — converging lenses and ray diagrams practice with other Physics topics or even switch to a totally different CIE subject without paying anything. Kramizo's optional Pro plan removes the daily cap and adds detailed progress analytics, but the free tier is the real product — used by thousands of GCSE, IGCSE and CSEC students.
Are the Refraction through lenses — converging lenses and ray diagrams questions aligned to the official CIE IGCSE Physics syllabus?
Every question is written against the published CIE IGCSE Physics specification, including the exact command words (state, describe, explain, calculate, evaluate, etc.), mark allocations, and difficulty tier you'd see on a real CIE paper. Explanations are written in the style of official examiner mark schemes — they tell you what is being awarded marks and why distractors are wrong, not just whether you got it right. The bank is continually refined to match the latest syllabus updates from CIE.
How is Refraction through lenses — converging lenses and ray diagrams typically tested on CIE IGCSE Physics papers?
Refraction through lenses — converging lenses and ray diagrams appears across multiple question types on real CIE IGCSE Physics papers — most commonly as multiple-choice questions in the objective section, structured short-answer questions in the main paper, and occasionally as part of an extended response. Kramizo's practice bank reflects that mix: 4-option MCQs, true/false statements, fill-in-the-blank key terms, multi-select questions, and ordering questions. Working through the bank gives you exposure to every question style examiners actually use.

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