Five thin lenses,each of focal length f,are placed in contact.What is the resulting focal length of the combination?

Name: Five thin lenses,each of focal length f,are placed in contact.What is the resulting focal length of the combination?
Brand: Quizplus
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Question

Quizplus · Accepted Answer

When thin lenses are placed in contact, their powers add up. The power of a lens is the reciprocal of its focal length (1/f). For five lenses, the total power is 5/f, so the resulting focal length is the reciprocal of this total power, which is f/5.

Five Thin Lenses,each of Focal Length F,are Placed in Contact