Grade 11 Physical Sciences · Waves, Sound and Light
Explain diffraction
Explain how waves spread out through a narrow gap, and how the spreading changes with wavelength and slit width (a narrower slit spreads more).
- past paper questions use it
- 1 past paper questions use it
- videos
- 3 videos
Learn it: explain diffraction
Pick one and watch it, then try the questions below. Videos load only when you tap play.
Now try it on a real exam question
No sign-up. Takes 3 minutes.
Question WE2 · Siyavula Grade 11 Physical Sciences, 6.5 Diffraction through a single slit, Worked example 2 · 3 marks
WE2 Two diffraction patterns are presented, determine which one has the longer wavelength based on the features of the diffraction pattern. The first pattern is for green light, the second pattern is for red light. The same diffraction grating is used to generate both diffraction patterns.(3)
Work it out on paper first. Then mark yourself with the official memo, one tick at a time.
Free on Android
Know exactly which skill is costing you marks.
Mark past papers tick by tick in the NavyBlue app. It remembers every mark you lose, shows you the skills to fix first, and picks your next questions.
Get NavyBlue free on Google Play
