Thin-lens optics (Question 2 (10 Marks)) — UPSC Physics Optional CSE 2015 Paper I

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Using matrix method, find out the equivalent focal length for a combination of two thin lenses of focal lengths $f_1$ and $f_2$ separated by a distance $a$ .

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Thin-lens optics (Question 2 (10 Marks)) — UPSC Physics Optional CSE 2015 Paper I

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