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Statement of a problem № 2980

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Two point sources of light are 50 cm apart, as shown in Fig. 40-9. They are viewed by the eye at a distance L. The entrance opening (pupil) of the viewer’s eye has a diameter of 3.0 mm. If the eye were perfect, the limiting factor for resolution of the two sources would be diffraction. In that limit, how large could we make L and still have the sources seen as separate entities?

Solution:
Two point sources of light are 50 cm apart, as shown in Fig. 40-9. They are view

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