#### Question

(i) Derive the mathematical relation between refractive indices* n*_{1} and *n*_{2} of two radii and radius of curvature *R* for refraction at a convex spherical surface. Consider the object to be a point since lying on the principle axis in rarer medium of refractive index *n*_{1} and a real image formed in the denser medium of refractive index *n*_{2}. Hence, derive lens maker's formula.

(ii) Light from a point source in air falls on a convex spherical glass surface of refractive index 1.5 and radius of curvature 20 cm. The distance of light source from the glass surface is 100 cm. At what position is the image formed?

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Solution for question: Derive the Mathematical Relation Between Refractive Indices N1 and N2 of Two Radii and Radius of Curvature R for Refraction at a Convex Spherical Surface. concept: Lensmaker's Formula. For the courses CBSE (Arts), CBSE (Commerce), CBSE (Science)