A double convex lens has two surfaces of equal radii R and refractive index m = 1 · 5

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KollegeApply · Accepted Answer

f = R As from lens maker formula: 1/f = (m - 1)(1/R_1 - 1/R_2) \Rightarrow 1/f = (1 . 5 - 1)(1/R - 1/- R) (	ext{ As given } R_1 = R_2 = R) 1/f = (0 . 5)(1/R + 1/R) 1/f = (0 . 5)(2/R) f = R

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