Two identical thin converging lenses brought in contact so that their axes coincides are placed `12.
Channel: Doubtnut
Date: 26/01/2020

Two identical thin converging lenses brought in contact so that their axes coincides are placed `12.5cm` form an object. What is the optical power of the system and each lens, if the real image formed by the system of lenses if four times as large as the object?