Class 12 Physics Diffraction Notes and Important Questions
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Notes for Class 12 Diffraction (Physics) are shown above.
Practice
Important Questions
A diffraction pattern is obtained using a beam of red light. What will be the effect on the diffraction pattern if the red light is replaced with white light?
All bright fringes become white.
All bright fringes, except the central one, become white.
All bright fringes become colourful.
All bright fringes, except the central one, become colourful.
Exam
Past Question Analysis
Historical exam-pattern data from past NEB question papers — not a prediction of future questions.
5
Question Items
1
Total Marks
5
Papers Appeared In
| Year | Question Items | Marks |
|---|---|---|
| 2083 | 1 | — |
| 2082 | 1 | — |
| 2081 | 1 | — |
| 2080 | 1 | — |
| 2078 | 1 | 1 |
Also appears in 6 model questions (not counted above — model sets aren't actual NEB exam history).
Students explore the spreading of light when it passes through narrow openings or around obstacles. The chapter includes single-slit diffraction, diffraction patterns, diffraction grating and resolving power.
This page covers Diffraction, chapter 12 of 25 in the Class 12 Physics syllabus set by the National Examination Board (NEB). 1 important question for this chapter is available, with a full solution.
For numerical and derivation-based chapters like this one, working through past NEB questions is usually more useful than re-reading notes alone — try solving each important question above before checking the solution, then compare your working step by step.