Practice question · Sort into groups
Sort: double-slit interference or single-slit diffraction?
Groups: Double-slit · Single-slit diffraction
- Central maximum is twice as wide as others
- One wide opening
- Equally spaced bright fringes
- for bright fringes
- Two narrow openings
- for dark fringes
Hints
- Ask whether light passes through two openings or one.
- Evenly spaced fringes and one broad central peak are the signatures.
Show the answer
Double-slit: for bright fringes, Equally spaced bright fringes, Two narrow openings
Single-slit diffraction: for dark fringes, Central maximum is twice as wide as others, One wide opening
Why
Double-slit produces equally spaced fringes; single-slit has a broad central peak.
Practise Wave Optics: Interference and Diffraction
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