A point source is located at a distance of \( 20 \mathrm{~cm} \) from the front surface of a sym...

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