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physics - waves

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A five-slit system with 7.0 um slit spacing is illuminated with 630 nm light. Find the angular positions of the third and sixth minima.

  • physics - waves -

    N•d•sinφ = m• λ,
    sinφ = m• λ/N•d ,
    sinφ3 = 3• 630•10^-9/5•7•10^-6 = 5.4•10^-2, φ3 = 3.095º,
    sinφ6 = 6• 630•10^-9/5•7•10^-6 = 10.8•10^-2, φ6 = 6.2º.

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