PHYSICAClass 12 Physics simulations · Wave Optics
Diffraction grating orders
Pass monochromatic light through many equally spaced slits and locate the bright orders.
What to notice
A denser grating spreads its allowed diffraction orders farther apart.
Key relation
d sinθ = mλ
Try this
Increase the order until it can no longer exist.
What you can change
- Wavelength: 400 to 700 nm
- Grating density: 100 to 1200 lines/mm
- Diffraction order: 0 to 4
More in Wave Optics
- Brewster’s angle
- Single slit diffraction
- 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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