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Statement of a problem № 1307

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A point source is located at a distance of 20 cm from the front surface of a symmetrical glass biconvex lens. The lens is 5.0 cm thick and the curvature radius of its surfaces is 5.0 cm. How far beyond the rear surface of this lens is the image of the source formed?

Solution:
A point source is located at a distance of 20 cm from the front surface of a sym

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