A-LevelPhysicsWaves9702/12 · Oct/Nov 2018 · Q281 Mark
What happens when waves pass through a gap equal to their wavelength?
AThere is diffraction and the wavelength decreases.
BThere is diffraction and the wavelength stays the same.
CThere is no diffraction and the wavelength decreases.
DThere is no diffraction and the wavelength stays the same.
✓ Correct answer
B: There is diffraction and the wavelength stays the same.
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