PHYSICAClass 12 Physics simulations · Wave Optics
Single slit diffraction
Narrow a slit and observe its diffraction pattern spread.
What to notice
The central maximum is twice as wide as the neighbouring maxima in the small-angle approximation.
Key relation
a sinθ = mλ (minima)
Try this
Halve slit width and compare the central maximum.
What you can change
- Slit width: 0.05 to 0.5 mm
- Wavelength: 400 to 700 nm
- Screen distance: 1 to 4 m
More in Wave Optics
- Brewster’s angle
- Diffraction grating orders
- Double slit interference
- Fringe width in Young’s experiment
- Polarisation and Malus’s law
- Resolving two stars (Rayleigh criterion)
- Thin-film interference
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