In an experiment, a pin a converging lens and plane mirror are arranged as shown in Figure 4.

      

In an experiment, a pin a converging lens and plane mirror are arranged as shown in Figure 4. The distance between the pin and the plane mirror is L cm while the distance between the lens and the plane mirror is q cm. The position of the pin is adjusted until its tip coincides with its real image.
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State the focal length of the lens.

  

Answers


John
Focal length = L - q
johnmulu answered the question on May 29, 2017 at 11:00


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