Grade 11 · Physical Sciences · Physics, Paper 1 · CAPS
Geometrical Optics: Refraction and Total Internal Reflection – Grade 11 Physical Sciences (Physics, Paper 1)
What Geometrical Optics: Refraction and Total Internal Reflection covers, how it is examined in Grade 11, the 4 sections to study and how long it takes – plus live online lessons when you get stuck.
- Study sections
- 4
- Exam-style questions
- 8
- Marks of practice
- 67
- Study time
- ≈ 3 h 15 min
What it covers
Geometrical Optics: Refraction and Total Internal Reflection is a Grade 11 Physical Sciences topic in the CAPS curriculum, examined in Physical Sciences Paper 1 (Physics) of the Grade 11 school and provincial exams. You study it in 4 sections: Refraction, the speed of light and refractive index; Snell's law; Critical angle and total internal reflection; Applications: optical fibres and prisms.
How it is examined
- Paper
- Grade 11 Physical Sciences Physics, Paper 1
- Exams
- June and November school or provincial exams – your school sets the papers and the dates
- Weighting
- Waves, sound and light: not listed in the 2025 Gr 11 exam guidelines for the November Paper 1 – check your school's ATP; when examined (school tests/June), typically ≈ 15–20 marks
There is no national Grade 11 exam. Your school’s exam guideline says which topics each paper covers.
Sections to study
- Refraction, the speed of light and refractive index25 min
- Snell's law30 min
- Critical angle and total internal reflection30 min
- Applications: optical fibres and prisms20 min
Study time
| Notes and worked examples4 sections | 1 h 45 min |
|---|---|
| Exam-style questions8 questions · 67 marks × 1,2 min per mark | 1 h 20 min |
| Topic quiz | 10 min |
| Total | ≈ 3 h 15 min |
Grade 11 exams are set by your school or province – plan back from the date your school gives you.
What you get in the portal
- 8 exam-style questions on Geometrical Optics: Refraction and Total Internal Reflection (67 marks in total), each with a full marking memo
- Worked examples with diagrams and step-by-step calculations for each of the 4 sections
- Tutor notes added to sections and questions – for the whole class or just for you
- A topic quiz and Grade 11 mock papers built from the exam-style questions
Notes, worked examples, questions and memos open once the tutor approves your account – usually with your first confirmed lesson.
Stuck on Geometrical Optics: Refraction and Total Internal Reflection? Book a one-on-one lesson.
R250 per hour – 60, 90 or 120 minutes, online from anywhere in South Africa. Pick Geometrical Optics: Refraction and Total Internal Reflection as your topic; you pay by EFT only after the tutor confirms.
Related Grade 11 Physics P1 topics
Questions about Geometrical Optics: Refraction and Total Internal Reflection
How is Geometrical Optics: Refraction and Total Internal Reflection examined in Grade 11?
Grade 11 learners write Physical Sciences exams set by their school or province, in June and November. Geometrical Optics: Refraction and Total Internal Reflection is part of Physical Sciences Physics, Paper 1; the usual weighting is: Waves, sound and light: not listed in the 2025 Gr 11 exam guidelines for the November Paper 1 – check your school's ATP; when examined (school tests/June), typically ≈ 15–20 marks. Your school’s exam guideline confirms which topics each exam covers.
How long does it take to study Geometrical Optics: Refraction and Total Internal Reflection?
About 3 h 15 min: 1 h 45 min for the notes and worked examples in its 4 sections, 1 h 20 min for the 8 exam-style questions (67 marks) at exam pace of 1,2 minutes per mark, and a 10-minute quiz.
Can I get online lessons for Grade 11 Geometrical Optics: Refraction and Total Internal Reflection?
Yes. Create a free account in the Adventuity portal, request a one-on-one online lesson of 60, 90 or 120 minutes (or a seat in a group class) and choose Geometrical Optics: Refraction and Total Internal Reflection as your topic. You pay by EFT only after the tutor confirms the booking.