Key Concepts Explained are Gap Size vs. Wavelength: The maximum diffraction occurs when the gap width is similar to the wavelength.
Curvature: How to draw the curved wavefronts after they pass through a narrow gap, compared to a wider gap.
Effect on Properties: frequency, wavelength, and speed do not change during diffraction. #diffraction #physics #igcse #igcse2026 #2026 #exam #revision
