Question
In a single slit diffraction pattern with slit width a and wavelength of light γ, find the angular position of first minima if screen distance is D(D >> a)
Options :
γ/a
2γ/a
3γ/2a
3γ/a
Answer :
γ/a
Solution :
For first minima
sin θ = γ/a, ∴ θ ≈ λ/a
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