Задача 40117.

And diverging lenses having the same focal distance F = 20 cm, placed at a distance l = 25 cm apart. The optical axes of both lenses are the same. Where should I put the point light source to a lens system provided parallel beam? Construct the path of the case where the source is not on the optical axis of the lens.

Detailed solution shorthand terms, formulas and laws used in the decision, the withdrawal of the calculation formula and the response.
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