Task id9716

Task id9716

Find by construction the position of the luminous point if the path of the rays after their refraction in the lens is known. One of these rays intersects with the main optical axis of the collecting lens at its focus (Fig. , a). In the case of a diverging lens (Fig. , b), one of the rays, after refraction in the lens, travels in such a way that its continuation intersects with the main optical axis of the lens at its focus.

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