Two thin lenses of focal lengths f1 and f2 are in contact and share the same central axis. Show that, in image formation, they are equivalent to a single thin lens for which the focal length is f = f1f2/( f1+ f2).
Added by Luz W.
Step 1
Step 1: Start with the lens formula for the first lens (Lens 1): \[ \frac{1}{F_1} = \frac{1}{v} - \frac{1}{u} \] Show more…
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