Question

Central bright band ($\theta = 0$) ? Band B (dark) Band A (bright) Figure 90 Experimental fringe pattern for Young's double slit experiment. 1. Figure 90 is a photograph of the light and dark bands produced by Young's double slit experiment using monochromatic light from a sodium lamp ($\lambda = 590$ nm). The distance between the double slits was 0.1 mm. Find the angle $\theta$ corresponding to bands A and B as indicated. 2. In an experiment like Young's experiment, monochromatic and coherent green light of wavelength 550 nm is used to illuminate two very narrow slits 7.70 $\mu$m apart. The centre bright band ($m = 0$) is called the zero order bright band. Calculate the deviation angle $\theta$ for the third order ($m = 3$) bright band.

          Central bright band ($\theta = 0$)
?
Band B (dark)
Band A (bright)
Figure 90 Experimental fringe pattern for Young's double slit experiment.
1. Figure 90 is a photograph of the light and dark bands produced by Young's double slit experiment using
monochromatic light from a sodium lamp ($\lambda = 590$ nm). The distance between the double slits was 0.1 mm.
Find the angle $\theta$ corresponding to bands A and B as indicated.
2. In an experiment like Young's experiment, monochromatic and coherent green light of wavelength 550
nm is used to illuminate two very narrow slits 7.70 $\mu$m apart. The centre bright band ($m = 0$) is called the
zero order bright band. Calculate the deviation angle $\theta$ for the third order ($m = 3$) bright band.

Central bright band (θ = 0)
?
Band B (dark)
Band A (bright)
Figure 90 Experimental fringe pattern for Young's double slit experiment.
1. Figure 90 is a photograph of the light and dark bands produced by Young's double slit experiment using
monochromatic light from a sodium lamp (λ = 590 nm). The distance between the double slits was 0.1 mm.
Find the angle θ corresponding to bands A and B as indicated.
2. In an experiment like Young's experiment, monochromatic and coherent green light of wavelength 550
nm is used to illuminate two very narrow slits 7.70 μm apart. The centre bright band (m = 0) is called the
zero order bright band. Calculate the deviation angle θ for the third order (m = 3) bright band.

Added by Kim F.

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