We wish to make a microscope with the help of two positive lenses both with a focal length of 20 mm each and the object is positioned 25 mm from the objective lens. How far apart the lenses should be so that the final image is formed at infinity?
Held on 12 May 2012 · Verified 6 Jul 2026.
20 mm
100 mm
120 mm
80 mm
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