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Diffraction

December 8, 2016
Published By : Pratik Kataria
Categorised in:

(1) asinθ = nλ (Direction of minima for single silt)
where, a = slit width AB
     n = order of spectrum
     λ = Wavelength of incident light
     θ = Angle of diffraction

(2) $ asinθ’= (n+1/2)λ, $ (Direction of secondary maxima for single slit)

where, a = slit width AB
     n = order of spectrum
     λ=Wavelength of incident light

(3) (a+b) sinθ = mλ, (Direction of maxima for grating)
where, a = slit width
     b = opaque space
     m = order of spectrum
     λ = wavelength of incident light
     (a+b) = grating element

(4) $ N = 1/{(a+b)} $
N = number of slits
(a+b) = grating element