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18.6 Consider a rectangular aperture of dimensions 0.2 mm x 0.3 mm. Obtain the positions of the first few maxima and minima in the Fraunhofer diffraction pattern along directions parallel to the length and breadth of the rectangle. Assume λ = 5 x 105 cm and that the diffraction pattern is produced at the focal plane of a lens of focal length 20 cm.

18.6 Consider a rectangular aperture of dimensions 0.2 mm x 0.3 mm. Obtain the positions of the first few maxima and minima in the Fraunhofer diffraction pattern along directions parallel to the length and breadth of the rectangle. Assume λ = 5 x 105 cm and that the diffraction pattern is produced at the focal plane of a lens of focal length 20 cm.

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18.6 Consider a rectangular aperture of dimensions 0.2 mm x 0.3 mm. Obtain the positions of the first few maxima and minima in the Fraunhofer diffraction pattern along directions parallel to the length and breadth of the rectangle. Assume λ = 5 x 105 cm and that the diffraction pattern is produced at the focal plane of a lens of focal length 20 cm.
Transcribed Image Text:18.6 Consider a rectangular aperture of dimensions 0.2 mm x 0.3 mm. Obtain the positions of the first few maxima and minima in the Fraunhofer diffraction pattern along directions parallel to the length and breadth of the rectangle. Assume λ = 5 x 105 cm and that the diffraction pattern is produced at the focal plane of a lens of focal length 20 cm.
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