Dissimilarity in focal length of lens for these two colours

Reference no: EM13681831

A thin piano-convex lens s made of flint glass which has an index of refraction of 1.64 for red light and 1.69 for violet light, if the radius of curvature of the surface of the lens s 20 cm, what s the dissimilarity in focal length of the lens for these two colours?

Reference no: EM13681831

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