The plane faces of two identical planoconvex lenses each having focal length of `40 cm` are pressed against each other to form a usual convex lens. The distance from this lens, at which an object must be placed to obtain a real, inverted image with magnification one isA. 80 cmB. 40 cmC. 20 cmD. 162 cm

The plane faces of two identical planoconvex lenses each having focal

1.	The plane faces of two identical planoconvex lenses each having focal length of `40 cm` are pressed against each other to form a usual convex lens. The distance from this lens, at which an object must be placed to obtain a real, inverted image with magnification one isA. 80 cmB. 40 cmC. 20 cmD. 162 cm
Answer» Correct Answer - b

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