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A positive lens having a focal length of 12 cm and a diameter of 15 cm is 9.0 cm in front of an opaque screen containing a central hole 50 mm in diameter. An axial object point-S is 25 cm in front of the lens.

A positive lens having a focal length of 12 cm and a diameter of 15 cm is 9.0 cm in front of an opaque screen containing a central hole 50 mm in diameter. An axial object point-S is 25 cm in front of the lens.

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A positive lens having a focal length of 12 cm and a diameter of 15 cm is 9.0 cm in front of an opaque screen containing a central hole 50 mm in diameter. An axial object point-S is 25 cm in front of the lens. Ораque screen F Entrance 25 cm * 9.0 pupil (a) Determine the lens or the opaque screen, which is the Aperture stop. (b) Locate the entrance pupil and exit pupil.
Transcribed Image Text:A positive lens having a focal length of 12 cm and a diameter of 15 cm is 9.0 cm in front of an opaque screen containing a central hole 50 mm in diameter. An axial object point-S is 25 cm in front of the lens. Ораque screen F Entrance 25 cm * 9.0 pupil (a) Determine the lens or the opaque screen, which is the Aperture stop. (b) Locate the entrance pupil and exit pupil.
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