Grade 11 · Physical Sciences · Physics, Paper 1 · CAPS
2D and 3D Wavefronts: Diffraction – Grade 11 Physical Sciences (Physics, Paper 1)
What 2D and 3D Wavefronts: Diffraction covers, how it is examined in Grade 11, the 3 sections to study and how long it takes – plus live online lessons when you get stuck.
- Study sections
- 3
- Exam-style questions
- 7
- Marks of practice
- 47
- Study time
- ≈ 2 h 20 min
What it covers
2D and 3D Wavefronts: Diffraction 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 3 sections: Wavefronts and Huygens' principle; Diffraction and the degree of diffraction; The single-slit diffraction pattern.
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 ≈ 8–15 marks
There is no national Grade 11 exam. Your school’s exam guideline says which topics each paper covers.
Sections to study
- Wavefronts and Huygens' principle20 min
- Diffraction and the degree of diffraction25 min
- The single-slit diffraction pattern30 min
Study time
| Notes and worked examples3 sections | 1 h 15 min |
|---|---|
| Exam-style questions7 questions · 47 marks × 1,2 min per mark | 55 min |
| Topic quiz | 10 min |
| Total | ≈ 2 h 20 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
- 7 exam-style questions on 2D and 3D Wavefronts: Diffraction (47 marks in total), each with a full marking memo
- Worked examples with diagrams and step-by-step calculations for each of the 3 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 2D and 3D Wavefronts: Diffraction? Book a one-on-one lesson.
R250 per hour – 60, 90 or 120 minutes, online from anywhere in South Africa. Pick 2D and 3D Wavefronts: Diffraction as your topic; you pay by EFT only after the tutor confirms.
Related Grade 11 Physics P1 topics
Questions about 2D and 3D Wavefronts: Diffraction
How is 2D and 3D Wavefronts: Diffraction examined in Grade 11?
Grade 11 learners write Physical Sciences exams set by their school or province, in June and November. 2D and 3D Wavefronts: Diffraction 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 ≈ 8–15 marks. Your school’s exam guideline confirms which topics each exam covers.
How long does it take to study 2D and 3D Wavefronts: Diffraction?
About 2 h 20 min: 1 h 15 min for the notes and worked examples in its 3 sections, 55 min for the 7 exam-style questions (47 marks) at exam pace of 1,2 minutes per mark, and a 10-minute quiz.
Can I get online lessons for Grade 11 2D and 3D Wavefronts: Diffraction?
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 2D and 3D Wavefronts: Diffraction as your topic. You pay by EFT only after the tutor confirms the booking.