PASCO OS-8500 INTRODUCTORY OPTICS SYSTEM - Manual (Page 56)

Introductory Optics System 012-02744K
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➁ Why does the magnification increase as the objective lens is moved closer to the object?
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➂ What focusing problems develop as the magnification increases?
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Use the Variable Aperture to restrict the path of light to the central regions of the objective lens. Vary
the size of the aperture and observe the effects on focusing.
➃ What effect does the aperture have on focusing?
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➄ What effect does the aperture have on the brightness of the image?
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➅ What advantage would there be in using a 75 mm focal length lens as the eyepiece?
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